Perhaps you should try some spelling variations:
"coal resource development update rate" » "coal resource development strategy rate", "coal resources development update rate", "local resource development update rate", "total resource development update rate", "coal resource development update rule", "coal resource development update cote", "coal resource development update note"
"a software development state status" » "a software development stage status", "a software developmental state status", "a software redevelopment state status", "a software development state states", "a software development states states", "a software development staff status"

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: (("a software development state status") OR ("coal resource development update rate"))~.
• Removing quotes may allow a broader search: (( a software development state status ) or ( coal resource development update rate ))~.
• Adding a wildcard symbol may retrieve word variants: (("a software development state status") or ("coal resource development update rate"))*.