Perhaps you should try some spelling variations:
"support group integration theories." » "support group integration theory.", "support group integration through.", "support group integration efforts.", "support grid integration theories.", "support run integration theories.", "support through integration theories.", "support from integration theories.", "support grant integration theories."
"support gvc integration series." » "support gvc integrating services.", "support gvc integration schemes.", "support gvc integration social.", "support grid integration series.", "support _ integration series.", "support eu integration series.", "support ndc integration series.", "support agri integration series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support gvc integration series.") OR ("support group integration theories."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support gvc integration series.\") OR (\"support group integration theories.\"))*".
• Removing quotes may allow a broader search: (( support gvc integration series. ) OR ( support group integration theories. ))*.