Perhaps you should try some spelling variations:
"support third international seminar." » "support third international series.", "support third international standard.", "support third international mining.", "support 3rd international seminar.", "support 2nd international seminar.", "support action international seminar.", "supper third international seminar.", "support toward international seminar.", "support them international seminar."
"supply canal irrigation systems." » "supply scale irrigation systems.", "supply canada irrigation systems.", "supply annual irrigation systems.", "supply china irrigation systems.", "supply canal 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 canal irrigation systems.") OR ("support third international seminar."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply canal irrigation systems.\") OR (\"support third international seminar.\"))".
• Removing quotes may allow a broader search: (( supply canal irrigation systems. ) OR ( support third international seminar. )).
• Adding a wildcard symbol may retrieve word variants: (("supply canal irrigation systems.") OR ("support third international seminar."))*.