Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
migrants integration » migrant integration, immigrants integration, migrants l'integration
supporting migrants » support migrants, supporting mechanism
fund information » road information
support fund » support funds, support food, support build

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

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