Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
integration efforts » international efforts, conservation efforts
price integration » service integration, trade integration, price indexation
support price » support process, support policy, export price
support grid » support agri, support grant, support group

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( support grid integration efforts. ) or ( support price integration theories. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support grid integration efforts. ) OR ( support price integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (( support grid integration efforts. ) or ( support price integration theories. ))*.