Perhaps you should try some spelling variations:
shallow international » how international, shallow integration, all international
international policy » international poverty, international prices, national policy
can irrigation » canal irrigation, tank irrigation, change irrigation
support can » support chuan, support bank, support a
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 shallow international policy. ) or ( support can irrigation systems. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply shallow international policy. ) OR ( support can irrigation systems. )).
• Adding a wildcard symbol may retrieve word variants: (( supply shallow international policy. ) or ( support can irrigation systems. ))*.