Perhaps you should try some spelling variations:
"support technical integration theories." » "support vertical integration theories.", "support technical information theories.", "support technical innovation theories.", "support technical integration theory.", "support technical integration through.", "support technical integration efforts.", "sector technical integration theories."
"support fare integration series." » "support fare integrating services.", "support fare integration schemes.", "support fare integration social.", "support market integration series.", "support trade integration series.", "support data integration series.", "support falls integration series.", "support state integration series."

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 technical integration theories.") OR ("support fare integration series."))~.
• Removing quotes may allow a broader search: (( support technical integration theories. ) or ( support fare integration series. ))~.
• Adding a wildcard symbol may retrieve word variants: (("support technical integration theories.") or ("support fare integration series."))*.