21. A user apparatus for dynamically reclassifying and retrieving at least a target information object among a plurality of information objects accessible through a system, the system being in signal connection with the user apparatus and being accessible to a plurality of attribute classifiers corresponding to the information objects, wherein each of the information objects has at least one of the attribute classifiers, the user apparatus comprising: an input device, generating signals according to a user operation; a processor in signal connection with the input device, outputting the signals to the system and receiving a determined first attribute classifier from the system; and a display unit in signal connection with the processor, displaying the determined first attribute classifier from the system; wherein according to the determined first attribute classifier, a plurality of first information objects, each of which has the determined first attribute classifier, are determined, and the attribute classifiers which do not correspond to any of the first information objects are removed, wherein the attribute classifiers not removed by the central processing unit comprise remained attribute classifiers each corresponding to at least one of the first information objects; wherein the remained attribute classifiers are visibly displayed on the display unit through the system, the remained attribute classifiers are a part of a search result, when at least two of the remained attribute classifiers correspond to a same subset of the first information objects, the at least two of the remained attribute classifiers are combined by the processor in a combined form to serve as a hint, and the hint is visibly displayed on the display unit through the system, wherein the combined form of the remained attribute classifiers are simply listed, grouped, circled, or marked.
21. A user apparatus for dynamically reclassifying and retrieving at least a target information object among a plurality of information objects accessible through a system, the system being in signal connection with the user apparatus and being accessible to a plurality of attribute classifiers corresponding to the information objects, wherein each of the information objects has at least one of the attribute classifiers, the user apparatus comprising: an input device, generating signals according to a user operation; a processor in signal connection with the input device, outputting the signals to the system and receiving a determined first attribute classifier from the system; and a display unit in signal connection with the processor, displaying the determined first attribute classifier from the system; wherein according to the determined first attribute classifier, a plurality of first information objects, each of which has the determined first attribute classifier, are determined, and the attribute classifiers which do not correspond to any of the first information objects are removed, wherein the attribute classifiers not removed by the central processing unit comprise remained attribute classifiers each corresponding to at least one of the first information objects; wherein the remained attribute classifiers are visibly displayed on the display unit through the system, the remained attribute classifiers are a part of a search result, when at least two of the remained attribute classifiers correspond to a same subset of the first information objects, the at least two of the remained attribute classifiers are combined by the processor in a combined form to serve as a hint, and the hint is visibly displayed on the display unit through the system, wherein the combined form of the remained attribute classifiers are simply listed, grouped, circled, or marked. 22. The system according to claim 21 , wherein the remained attribute classifiers are ranked according to at least a sequence selected from a group consisting of an alphabet sequence, an overall-clicking ranking sequence, an overall-search ranking sequence, an ACCN-related sequence and any combination thereof.