Perhaps you should try some spelling variations:
international seminar » international series, international standard, international mining
rate international » rates international, trade international, raise international
canal irrigation » scale irrigation
supply canal » supply canada, supply annual, supply china
support rate » support create, support ratio, support state
systems. » 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 rate international seminar. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply canal irrigation systems. ) OR ( support rate international seminar. )).
• Adding a wildcard symbol may retrieve word variants: (( supply canal irrigation systems. ) or ( support rate international seminar. ))*.