Perhaps you should try some spelling variations:
international convention » international context, international communication, international conference
regarding concepts » recording concepts, regarding consent
program regarding » problems regarding, program trading, program reasoning
concepts cited » concepts cases, concepts case, concepts care

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((international convention) or (international cooperation)) program regarding concepts cited~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((international convention) OR (international cooperation)) program regarding concepts cited.
• Adding a wildcard symbol may retrieve word variants: ((international convention) or (international cooperation)) program regarding concepts cited*.