Perhaps you should try some spelling variations:
"support them international seminar." » "support them international standard.", "support them international journal.", "support them international air.", "support third international seminar.", "support from international seminar.", "support new international seminar.", "support tool international seminar."
"supply charges irrigation systems." » "supply change irrigation systems.", "supply large irrigation systems.", "supply chains irrigation systems.", "supply curves irrigation systems.", "supply shortages irrigation systems.", "supply charges irrigation system."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply charges irrigation systems.") or ("support them international seminar."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply charges irrigation systems.") OR ("support them international seminar.")).
• Removing quotes may allow a broader search: (( supply charges irrigation systems. ) or ( support them international seminar. )).
• Adding a wildcard symbol may retrieve word variants: (("supply charges irrigation systems.") or ("support them international seminar."))*.