Perhaps you should try some spelling variations:
"supply costs international seminar." » "supply costs international standard.", "supply costs international journal.", "supply costs international air.", "supply oxus international seminar.", "supply country international seminar.", "supply states international seminar."
"supply how irrigation schemes." » "supply how irrigation scheme.", "supply how irrigation systems.", "supply crop irrigation schemes.", "supply from irrigation schemes.", "supply high irrigation schemes.", "supply shock 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: (("supply costs international seminar.") or ("supply how irrigation schemes."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply costs international seminar.") OR ("supply how irrigation schemes.")).
• Removing quotes may allow a broader search: (( supply costs international seminar. ) or ( supply how irrigation schemes. )).
• Adding a wildcard symbol may retrieve word variants: (("supply costs international seminar.") or ("supply how irrigation schemes."))*.