Perhaps you should try some spelling variations:
forest investment » foreign investment, direct investment, foreign investments
based investment » fixed investment, best investment, bond investment
investment flows » investment funds
heat forest » meet forest, smart forest
rent based » rest based, agent based, event based

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. rent based investment policy ) or ( h. heat forest investment flows ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. rent based investment policy ) OR ( h. heat forest investment flows )).
• Adding a wildcard symbol may retrieve word variants: (( h. rent based investment policy ) or ( h. heat forest investment flows ))*.