Perhaps you should try some spelling variations:
investment demands » investment demand, investment trends
rates investment » notes investment, rules investment, water investment
based investment » fixed investment, best investment, bond investment
current rates » current rate, current ratio, current water
funds » fund

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

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