Meng Lu's home page / computing / example / examples of using google search Search only exactly matched string Take into account synonyms Search only exactly matched string Compare "electron charge" and electron charge: http://www.google.com/#q="electron+charge" http://www.google.com/#q=electron+charge Take into account synonyms Compare ~small and small: http://www.google.com/#q=~small http://www.google.com/#q=small