Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
greater investment » great investment, green investment, related investment
better investment » sector investment, sector investments, term investment
rent greater » rent great
salt better » small better, all better, eat better

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. salt better investment policy ) OR ( h. rent greater investment treaties ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. salt better investment policy ) or ( h. rent greater investment treaties ))*.