Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
better investment » sector investment, sector investments, term investment
payment service » payment services, employment service
making better » make better
fare payment » care payments, late payment, card payment

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. making better investment treaties ) or ( h. rent fare payment service ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. making better investment treaties ) OR ( h. rent fare payment service )).
• Adding a wildcard symbol may retrieve word variants: (( h. making better investment treaties ) or ( h. rent fare payment service ))*.