Perhaps you should try some spelling variations:
development projects » development policy
investment period » investment series, investment policy, adjustment period
rates investment » notes investment, rules investment, water investment
led development » land development, based development, road development
heat rates » heat rate, death rates, heat waves
kent led » kent e, kent cem

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 led development projects ) or ( h. heat rates investment period ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( h. kent led development projects ) OR ( h. heat rates investment period )).
• Adding a wildcard symbol may retrieve word variants: (( h. kent led development projects ) or ( h. heat rates investment period ))*.