Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
water investment » water investments, after investment, rates investment
real sector » road sector, health sector
rent water » ment water, melt water, peat water
el sector » del sector, fuel sector, oil sector
funds » fund

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. rent water investment treaties ) OR ( h. ((el sector) OR (real sector)) investment funds ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. rent water investment treaties ) or ( h. ((el sector) OR (real sector)) investment funds ))~".
• Adding a wildcard symbol may retrieve word variants: (( h. rent water investment treaties ) or ( h. ((el sector) OR (real sector)) investment funds ))*.