Perhaps you should try some spelling variations:
"industrial development results periods" » "industrial development report periods", "industrial development research periods", "industrial development rest periods"
"industrial development program operations" » "industrial development programs operations", "industrial development programme operations", "industrial development process operations"

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 results periods") or ("industrial development program operations"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("industrial development results periods") OR ("industrial development program operations"))*.
• Removing quotes may allow a broader search: (( industrial development results periods ) or ( industrial development program operations ))*.