Presently, wais is being phased out in favor of easier to use web-based search engines. Wais really was designed for an earlier generation of machines in the late 1980s, even though it showed the way for today's comparatively sophisticated search engines. Yahoo is popular, having its start as a Stanford University student project. Now, it is a highly rated and successful enterprise with a value exceeding a half billion dollars. Initially, contents were of high interest to the college audience but it has broadened greatly since it went commercial about 5 years ago.
Boolean logic allows multiple key words to be used, joined by a logical operator.
Try Yahoo's boolean capabilities and other search syntax. Using a good syntax focuses the search engine better on what you want with less junk to sort out. Overly constraining the engine causes useful information to be ignored. A variant is InfoSeek , another commercial service, that allows Boolean logic and other search delimiters to be used. This is often the case.