Perhaps you should try some spelling variations:
communication collections » communication applications, communication cohesion, communication foundations
collections metric » collections generic, collections music, collections generics
design basic » design basics, designs basic, desi6n basics
design basis » design basics, designs basic, design based

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication collections metric ((design basic) or (design basis)) linear~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication collections metric ((design basic) OR (design basis)) linear.
• Adding a wildcard symbol may retrieve word variants: communication collections metric ((design basic) or (design basis)) linear*.