Perhaps you should try some spelling variations:
information documents » information documentation, information agents, information requirements
first precision » first decision, finite precision, dies precision
first revision » first division, first session, first edition
elastic spline » elastic line, elastic spring, elastic solids
plastic liner » elastic linear, plastic pipe

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 ((first precision) or (first revision)) ((elastic spline) or (plastic liner))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information documents ((first precision) OR (first revision)) ((elastic spline) OR (plastic liner)).
• Adding a wildcard symbol may retrieve word variants: information documents ((first precision) or (first revision)) ((elastic spline) or (plastic liner))*.