Perhaps you should try some spelling variations:
greater investment » green investment, related investment, better investment
investment costs » investment funds, investment flows, investment banks
state government » e government
heat greater » heat rate, heat rates, heat meter
bengal state » kenya state

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. heat greater investment costs ) or ( h. bengal state government securities ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. heat greater investment costs ) OR ( h. bengal state government securities )).
• Adding a wildcard symbol may retrieve word variants: (( h. heat greater investment costs ) or ( h. bengal state government securities ))*.