Perhaps you should try some spelling variations:
investment treaties » investment strategies, investment activities, investment incentives
investment schemes » investment regimes
power investment » power investments, poor investment, border investment
melt better » get better, help better, mold better
eat better » data better, read better, a better
net power » best power, heat power, act power

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( h. net power investment schemes ) or ( h. ((melt better) OR (eat better)) investment treaties ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. net power investment schemes ) OR ( h. ((melt better) OR (eat better)) investment treaties )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. net power investment schemes ) or ( h. ((melt better) OR (eat better)) investment treaties ))".
• Adding a wildcard symbol may retrieve word variants: (( h. net power investment schemes ) or ( h. ((melt better) OR (eat better)) investment treaties ))*.