Perhaps you should try some spelling variations:
information documents » information documentation, information agents, information requirements
grade expansion » trade expansion, graph expansion, grade expression
made expansion » trade expansion, lace expansion, age expansion
methods lamp » method lamp, methods flame, methods lymph
method clamp » method lamp, method class, method case

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 ((made expansion) or (grade expansion)) ((methods lamp) or (method clamp))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information documents ((made expansion) OR (grade expansion)) ((methods lamp) OR (method clamp)).
• Adding a wildcard symbol may retrieve word variants: information documents ((made expansion) or (grade expansion)) ((methods lamp) or (method clamp))*.