Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
worker adjustment » border adjustment, work adjustment, market adjustment
adjustment period » adjustment policy, adjustment operations
better investment » sector investment, sector investments, term investment
kept worker » beet worker, guest worker
eat better » data better, read better, a better

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 worker adjustment period ) or ( h. eat better investment treaties ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. kept worker adjustment period ) OR ( h. eat better investment treaties )).
• Adding a wildcard symbol may retrieve word variants: (( h. kept worker adjustment period ) or ( h. eat better investment treaties ))*.