Perhaps you should try some spelling variations:
"airport business information efforts." » "airport business innovation efforts.", "airport business transformation efforts.", "airport business informations ressorts.", "export business information efforts.", "support business information efforts.", "about business information efforts."
"import fuel conservation efforts." » "import soil conservation efforts.", "import forest conservation efforts.", "import fuel consumption efforts.", "imported fuels conservation efforts.", "import model conservation efforts.", "import rules conservation efforts."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("import fuel conservation efforts.") or ("airport business information efforts."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("import fuel conservation efforts.") OR ("airport business information efforts.")).
• Removing quotes may allow a broader search: (( import fuel conservation efforts. ) or ( airport business information efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("import fuel conservation efforts.") or ("airport business information efforts."))*.