Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
green investment » foreign investment, direct investment, forest investment
investment fund » investment funds, investment bank, investment flows
depth green » health green
does green » does greater, heroes green

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. does green investment treaties ) OR ( h. depth green investment fund ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. does green investment treaties ) or ( h. depth green investment fund ))*.