Perhaps you should try some spelling variations:
investment strategies » investment strategy, development strategies, investment rates
fixed investment » direct investment
rules investment » rates investment, prices investment, rogers investment
investment cost » investment costs
kent fixed » net fixed
heat rules » heat rates, debt rules, heat sales

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 fixed investment strategies ) OR ( h. heat rules investment cost ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( h. kent fixed investment strategies ) OR ( h. heat rules investment cost ))".
• Adding a wildcard symbol may retrieve word variants: (( h. kent fixed investment strategies ) OR ( h. heat rules investment cost ))*.