Perhaps you should try some spelling variations:
"functions analysis" » "function analysis"
"solutions analysis" » "resolution analysis"
"functional analysis" » "function analysis"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("functional analysis") OR ("functions analysis"))) OR ((("equations analysis") OR ((("solutions analysis") OR ("evolutionary analysis")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"functional analysis\") OR (\"functions analysis\"))) or (((\"equations analysis\") or (((\"solutions analysis\") or (\"evolutionary analysis\"))))))".
• Removing quotes may allow a broader search: (((( functional analysis ) OR ( functions analysis ))) or ((( equations analysis ) or ((( solutions analysis ) or ( evolutionary analysis )))))).
• Adding a wildcard symbol may retrieve word variants: (((("functional analysis") OR ("functions analysis"))) or ((("equations analysis") or ((("solutions analysis") or ("evolutionary analysis"))))))*.