Perhaps you should try some spelling variations:
investment demand » investor demand
water investment » water investments, after investment, rates investment
investment flows » investment funds
fixed investment » direct investment
rent water » ment water, melt water, peat water
text fixed » net fixed, text file, text files

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 water investment flows ) or ( h. text fixed investment demand ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. rent water investment flows ) OR ( h. text fixed investment demand )).
• Adding a wildcard symbol may retrieve word variants: (( h. rent water investment flows ) or ( h. text fixed investment demand ))*.