Perhaps you should try some spelling variations:
"supply rate international seminar." » "supply rate international standard.", "supply rate international journal.", "supply rate international air.", "supply rates international seminar.", "supply trade international seminar.", "supply raise international seminar.", "supply water international seminar.", "supply case international seminar.", "supply data international seminar."
"supply farm irrigation systems." » "supply scale irrigation systems.", "supply canal irrigation systems.", "supply farm 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 farm irrigation systems.") or ("supply rate international seminar."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply farm irrigation systems.") OR ("supply rate international seminar."))*.
• Removing quotes may allow a broader search: (( supply farm irrigation systems. ) or ( supply rate international seminar. ))*.