Perhaps you should try some spelling variations:
"Industrial development forest operation" » "Industrial development forests operation", "Industrial development first operation", "Industrial development foreign operation", "Industrial development forest operations", "Industrial development forestry operation", "Industrial development forces operation"
"industrial development rest periods" » "industrial development west periods", "industrial development best periods", "industrial development risk periods", "industrial development peak periods"

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: (("Industrial development forest operation") OR ("industrial development rest periods"))~.
• Removing quotes may allow a broader search: (( Industrial development forest operation ) or ( industrial development rest periods ))~.
• Adding a wildcard symbol may retrieve word variants: (("Industrial development forest operation") or ("industrial development rest periods"))*.