Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
investment demands » investment demand, investment funds, investment trends
based investment » fixed investment, best investment, bond investment
heat sector » meat sector, health sector, heating sector
kept based » depth based, text based, set based

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

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