In the present cyber world, it is necessary to have a good understanding about the topic and choose the right query term to retrieve exhaustive, relevant information. Studies of on-line use have revealed that subject searches are the most frequent type of search, yet a surprising number of subject searches (30-50%) fail to retrieve records whatsoever. The causes of search failure appears to be, lack of thesaurus, misspelling, mistyping of search terms and problems in understanding the use of Boolean logic. If a veterinarian lacks domain knowledge, when looking for information on a specific...