Perhaps you should try some spelling variations:
communicate collagen » communicate collected, communicate listen
matrix dimensions » material dimensions, metrics dimensions, matrix extensions
whose spaces » phase spaces, shape spaces, whose race
tuple spaces » tuple space, triple space
type spaces » state spaces

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

• Performing a fuzzy search may retrieve terms with similar spellings: communicate collagen matrix dimensions ((((whose spaces) or (tuple spaces))) or (type spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communicate collagen matrix dimensions ((((whose spaces) OR (tuple spaces))) OR (type spaces)).
• Adding a wildcard symbol may retrieve word variants: communicate collagen matrix dimensions ((((whose spaces) or (tuple spaces))) or (type spaces))*.