Perhaps you should try some spelling variations:
"industrial development research operation" » "industrial development report operation", "industrial development research cooperation", "industrial development research population", "industrial development research generation"
"industrial development first period" » "industrial development forest period", "industrial development fast period", "industrial development firm period", "industrial development first person", "industrial development first price"

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 first period") or ("industrial development research operation"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("industrial development first period") OR ("industrial development research operation")).
• Removing quotes may allow a broader search: (( industrial development first period ) or ( industrial development research operation )).
• Adding a wildcard symbol may retrieve word variants: (("industrial development first period") or ("industrial development research operation"))*.