Perhaps you should try some spelling variations:
communication international » competition international, publication international
international quantity » international quality, international quarterly, international equity
quantity dimensions » quality dimensions, quality dimension, anxiety dimensions
database assisted » database system, data assisted, database limited
databases invited » databases united, databases induced, datasets invited

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication international quantity dimensions ((database assisted) or (databases invited))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication international quantity dimensions ((database assisted) OR (databases invited)).
• Adding a wildcard symbol may retrieve word variants: communication international quantity dimensions ((database assisted) or (databases invited))*.