Perhaps you should try some spelling variations:
investment demand » investment bank, investment fund, investor demand
based investment » fixed investment, best investment, bond investment
water investment » water investments, rates investment, greater investment
rent based » agent based, rank based, test based
kept water » melt water

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 based investment policy ) OR ( h. kept water investment demand ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. rent based investment policy ) or ( h. kept water investment demand ))*.