Perhaps you should try some spelling variations:
investment demands » investment demand, investment funds, investment banks
investment series » investment services, investment barriers, investment treaties
based investment » fixed investment, best investment, bond investment
rates investment » notes investment, water investment, related investment
rent based » agent based, rank based, test based
melt rates » heat rates, 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 series ) OR ( h. melt rates investment demands ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. rent based investment series ) or ( h. melt rates investment demands ))*.