Perhaps you should try some spelling variations:
"Industrial development research period" » "Industrial development report period", "Industrial development research methods", "Industrial development research service", "Industrial development research revised"
"Industrial development research method" » "Industrial development report method", "Industrial development research methods", "Industrial development research methodology"

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 research period") OR ("Industrial development research method"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Industrial development research period\") OR (\"Industrial development research method\"))".
• Removing quotes may allow a broader search: (( Industrial development research period ) OR ( Industrial development research method )).
• Adding a wildcard symbol may retrieve word variants: (("Industrial development research period") OR ("Industrial development research method"))*.