Perhaps you should try some spelling variations:
investments period » investment period, investment periods, investments peru
water investments » term investments, sector investments
poor investment » power investments, sector investment
rent water » ment water, melt water, peat water
unit poor » unit root

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. unit poor investment costs ) or ( h. rent water investments period ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. unit poor investment costs ) OR ( h. rent water investments period )).
• Adding a wildcard symbol may retrieve word variants: (( h. unit poor investment costs ) or ( h. rent water investments period ))*.