Learn how to use the refining features on the search results page of Web of Science:
Refine your search by changing the databases that Web of Science will search. Selecting "All Databases" or "Web of Science Core Collection" (which is the default database) will give you the broadest results. Selecting "Russian Science Citation Index," for example, will give you much narrower (and only Russian) results.
Clicking "Learn More" to the right of the drop-down menu will give you more information about each of the Web of Science databases available to UI researchers.
Web of Science has its own help page. If you are getting stuck on searches that don't yield many results, or the kinds of results you are looking for, try the help page! A hyperlinked "click here" is on the right side of the main search page, just to the right of the blue search button.