Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
plans international » plants international, places international, laws international
delta irrigation » et irrigation, alfa irrigation, mega irrigation
support delta » supporto della, support data, support de
support plans » support land, support place, support pilots
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: (( support delta irrigation systems. ) or ( support plans international efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support delta irrigation systems. ) OR ( support plans international efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( support delta irrigation systems. ) or ( support plans international efforts. ))*.