Perhaps you should try some spelling variations:
communications communication » communication communication, communicating communication, communication communicating
communication hat » communication what, communications what, communication http
hat dimension » a dimension, tacit dimension, pit dimensions
range spaces » gauge spaces, range states, large spaces
whose spaces » phase spaces, shape spaces, whose race
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: communications communication hat dimension ((range spaces) or (((type spaces) or (whose spaces))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communications communication hat dimension ((range spaces) OR (((type spaces) OR (whose spaces)))).
• Adding a wildcard symbol may retrieve word variants: communications communication hat dimension ((range spaces) or (((type spaces) or (whose spaces))))*.