Perhaps you should try some spelling variations:
investment series » investment services, investment barriers, investment treaties
investment treaty » investment treaties, investment trusts, investment targets
green investment » foreign investment, direct investment, forest investment
fixed investment » direct investment
kept » dept

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. (kent OR kept) green investment treaty ) or ( h. agent fixed investment series ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. (kent OR kept) green investment treaty ) OR ( h. agent fixed investment series )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. (kent OR kept) green investment treaty ) or ( h. agent fixed investment series ))".
• Adding a wildcard symbol may retrieve word variants: (( h. (kent OR kept) green investment treaty ) or ( h. agent fixed investment series ))*.