Perhaps you should try some spelling variations:
investment demands » investment demand, investment funds, investment banks
rates investment » notes investment, water investment, related investment
investment does » investment codes, investment flows, investment costs
test fixed » testing fixed
kent rates » heat rates

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. ((test fixed) OR (net fixed)) investment does ) or ( h. kent rates investment demands ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. ((test fixed) OR (net fixed)) investment does ) OR ( h. kent rates investment demands ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. ((test fixed) OR (net fixed)) investment does ) or ( h. kent rates investment demands ))*".