Perhaps you should try some spelling variations:
"industrial development forest period" » "industrial development forests period", "industrial development first period", "industrial development foreign period", "industrial development rest period", "industrial development rest periods"
"Industrial development risk period" » "Industrial development russia period", "Industrial development review period", "Industrial development rights period", "Industrial development rest period", "Industrial development crisis period", "Industrial development first period"

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