Perhaps you should try some spelling variations:
"support a integration theories." » "support a integration theorems.", "support a integrationstheorie 2.", "support a integration theory.", "support 3 integration theories.", "support 2 integration theories.", "support 4 integration theories.", "support _ integration theories."
"import dat_ integration series." » "import dat_ integration services.", "import dat_ interaction series.", "import dat_ integration server.", "import data integration series.", "import dutch integration series.", "import _ integration series.", "import duty integration series.", "import dutie 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: (("import dat_ integration series.") or ("support a integration theories."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import dat_ integration series.") OR ("support a integration theories.")).
• Removing quotes may allow a broader search: (( import dat_ integration series. ) or ( support a integration theories. )).
• Adding a wildcard symbol may retrieve word variants: (("import dat_ integration series.") or ("support a integration theories."))*.