Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
lending series » lending services, reading series, lending terms
support group » support from, support grant
support data » support a, export data, supply data
import data » import duty

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((support data) OR (import data)) integration theories. ) OR ( support group lending series. ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((support data) OR (import data)) integration theories. ) or ( support group lending series. ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((support data) OR (import data)) integration theories. ) or ( support group lending series. ))*.