Perhaps you should try some spelling variations:
investment demand » investor demand
power investment » power investments, poor investment, border investment
rates investment » notes investment, rules investment, water investment
kept power » best power, heat power, net power
melt rates » heat rates, melt water

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 power investment demand ) or ( h. melt rates investment barriers ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. kept power investment demand ) OR ( h. melt rates investment barriers )).
• Adding a wildcard symbol may retrieve word variants: (( h. kept power investment demand ) or ( h. melt rates investment barriers ))*.