Perhaps you should try some spelling variations:
"functional institution" » "function institution" (Expand Search)
"functional institutionsal" » "function institutionsal" (Expand Search), "functional institutions" (Expand Search), "functional constitutional" (Expand Search)
"functional institutional" » "function institutional" (Expand Search), "functional institutions" (Expand Search)

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: (("functional institution") OR ((("functional institutionsal") OR ("functional institutional"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"functional institution\") OR (((\"functional institutionsal\") OR (\"functional institutional\"))))".
• Removing quotes may allow a broader search: (( functional institution ) OR ((( functional institutionsal ) OR ( functional institutional )))).
• Adding a wildcard symbol may retrieve word variants: (("functional institution") OR ((("functional institutionsal") OR ("functional institutional"))))*.