Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
conservation effort » conservation efforts, consolidation efforts
trade conservation » forage conservation, de conservation, grass conservation
tool integration » global integration, social integration, 3 integration
supply trade » supply case
supply tool » supply school, support tool, supply donor

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

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