Perhaps you should try some spelling variations:
"industrial development research period" » "industrial development report period", "industrial development research prior", "industrial development research persona", "industrial development research series"
"industrial development results period" » "industrial development report period", "industrial development results per", "industrial development results operation"

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