Perhaps you should try some spelling variations:
"industrial development program operations" » "industrial development programs operations", "industrial development programme operations", "industrial development process operations"
"industrial development forest periods" » "industrial development forests periods", "industrial development first periods", "industrial development foreign periods", "industrial development rest periods", "industrial development first period", "industrial development rest period"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("industrial development forest periods") or ("industrial development program operations"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("industrial development forest periods") OR ("industrial development program operations")).
• Removing quotes may allow a broader search: (( industrial development forest periods ) or ( industrial development program operations )).
• Adding a wildcard symbol may retrieve word variants: (("industrial development forest periods") or ("industrial development program operations"))*.