Perhaps you should try some spelling variations:
"functions analysis" » "function analysis", "solutions analysis"
"equations analysis" » "solutions 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 ((("evolutionary analysis") OR ("equations analysis")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"functional analysis\") OR (\"functions analysis\"))) or (((\"evolutionary analysis\") or (\"equations analysis\"))))".
• Removing quotes may allow a broader search: (((( functional analysis ) OR ( functions analysis ))) or ((( evolutionary analysis ) or ( equations analysis )))).
• Adding a wildcard symbol may retrieve word variants: (((("functional analysis") OR ("functions analysis"))) or ((("evolutionary analysis") or ("equations analysis"))))*.