1. A method for creating a search string using a computer system, the computer system having a processor, a display, and a browser, the computer system programmed with a server-based program called a search builder, the method comprising the steps of: selecting a search topic; defining a plurality of word categories related to the search topic; forming a word group for each word category; populating each word group with a plurality of preselected words within the word category, each of the plurality of words within each word group selected to vary the scope of a search relative to the remaining words in the word group; generating a first search string by selecting a first word from each of a plurality of the word groups to create a search string; transmitting the first search string to a search engine; receiving a first data set from the search engine; creating a second search string by replacing the first word of a first word group of the first search string with second word from the first word group; transmitting the second search string to the search engine; and, receiving a second data set from the search engine.