Perhaps you should try some spelling variations:
"import south integration theories." » "import south integration theory.", "import south integration through.", "import south integration efforts.", "import through integration theories.", "import social integration theories.", "import sector integration theories.", "import growth integration theories.", "import source integration theories.", "support south integration theories."
"support better fostering services." » "support better modeling services.", "support better testing services.", "support better fisheries services.", "support sector fostering services.", "support review fostering services.", "support state fostering services."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("import south integration theories.") or ("support better fostering services."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import south integration theories.") OR ("support better fostering services."))*.
• Removing quotes may allow a broader search: (( import south integration theories. ) or ( support better fostering services. ))*.