Perhaps you should try some spelling variations:
"export trade integration schemes." » "export trade integration schengen.", "export trade integration regimes.", "export trade integration some.", "export taxes integration schemes.", "export base integration schemes.", "export tax integration schemes."
"support deep irrigation schemes." » "support deep irrigation scheme.", "support deep irrigation systems.", "support drip irrigation schemes.", "support delta irrigation schemes.", "support level irrigation schemes.", "supported deep irrigation schemes.", "support de irrigation schemes.", "support does irrigation schemes."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("export trade integration schemes.") or ("support deep irrigation schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("export trade integration schemes.") OR ("support deep irrigation schemes."))*.
• Removing quotes may allow a broader search: (( export trade integration schemes. ) or ( support deep irrigation schemes. ))*.