1. A system for dynamically reclassifying and retrieving at least a target information object among a plurality of information objects, comprising: a memory, storing the information objects and a plurality of attribute classifiers corresponding to the information objects, wherein each of the information objects has at least one of the attribute classifiers; and a central processing unit in signal connection with the memory, wherein after the central processing unit receives a determined first attribute classifier, the central processing unit determines a plurality of first information objects, wherein each of the first information objects has the determined first attribute classifier; the central processing unit removes the attribute classifiers which do not correspond to any of the first information objects, 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 displayable through the system, the remained attribute classifiers are a part of a search result, at least two of the remained attribute classifiers which correspond to a same subset of the first information objects are combined by the central processing unit in a combined form to serve as a hint, and the system displays the hint, wherein the combined form of the remained attribute classifiers are simply listed, grouped, circled, or marked.