Perhaps you should try some spelling variations:
development strategies » development strategy
rates development » trades development, rate developments, cities development
better investment » sector investment, sector investments, term investment
data better » dam better, eat better, data twitter
heat rates » heat rate, death rates, heat waves

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

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