Perhaps you should try some spelling variations:
communication foundation » communication education, communication communication, communication information
foundation basic » foundations basic, foundation based, foundation case
dimensions model » dimensional model, dimensions more, dimensional models
dimensions among » dimensions a, dimensions book, dimensions from

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

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