Perhaps you should try some spelling variations:
investment period » investment series, investment policy, investment demand
rates investment » notes investment, water investment, related investment
investment bank » investment funds
kept rates » repo rates, heat rates
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 rates investment period ) or ( h. melt rates investment bank ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. kept rates investment period ) OR ( h. melt rates investment bank )).
• Adding a wildcard symbol may retrieve word variants: (( h. kept rates investment period ) or ( h. melt rates investment bank ))*.