Perhaps you should try some spelling variations:
telecommunications policy » telecommunication policy, telecommunications series, telecommunications library
communications physics » communications physical, communications physicians, communications policy
dimensions pure » dimensions pre, dimensions part, dimensions future
pure file » pure life, pure face, pure milk

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication ((communications physics) or (telecommunications policy)) dimensions pure file~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication ((communications physics) OR (telecommunications policy)) dimensions pure file.
• Adding a wildcard symbol may retrieve word variants: communication ((communications physics) or (telecommunications policy)) dimensions pure file*.