21. A computer-implemented method for processing multilingual documents in a document database using a computer-implemented system comprising a processor and a display operatively coupled to the processor, the multi-lingual documents having an initial ranking based upon a user search query provided by a user, the method comprising; operating the processor to perform the following selecting N top ranked multi-lingual documents from the retrieved multilingual documents, with N being an integer greater than 1; displaying for the user the initial ranking of the N top ranked retrieved multi-lingual documents; permitting user selection of a plurality of vocabulary words based upon occurrences thereof in at least some of the retrieved multi-lingual documents; generating respective relevancies of the user-selected vocabulary words in the N top ranked retrieved multi-lingual documents; generating a re-ranking of the N top ranked multi-lingual documents based on the relevancies of the vocabulary words; and operating the display to display for the user the re-ranking of the multi-lingual documents, and for each multi-lingual document being displayed, also to display its initial ranking.
22. A computer-implemented method according to claim 21 wherein the multilingual documents comprise at least one document having multiple languages.