Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
treatment services » payment services
better investment » sector investment, sector investments, term investment
water treatment » wastewater treatment
kept better » get better, eat better
kept water » melt water, ment water, peat water

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. kept water treatment services ) OR ( h. kept better investment treaties ))~.
• Adding a wildcard symbol may retrieve word variants: (( h. kept water treatment services ) or ( h. kept better investment treaties ))*.