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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support grid integration series.\") OR (\"support group integration theories.\"))~".
• Removing quotes may allow a broader search: (( support grid integration series. ) OR ( support group integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support grid integration series.") OR ("support group integration theories."))*.