Talvez debería tentar con algunhas variantes ortográficas:
information documents » information documentation, information agents, information requirements
documents fourteenth » agents fourteenth
fourteenth dimension » fourteenth session, fourth dimension, tenth dimension
substring searching » sorting searching, abstracting searching
string searching » sorting searching, string matching, making searching

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information documents fourteenth dimension ((string searching) or (substring searching))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information documents fourteenth dimension ((string searching) OR (substring searching)).
• Adding a wildcard symbol may retrieve word variants: information documents fourteenth dimension ((string searching) or (substring searching))*.