Perhaps you should try some spelling variations:
22functional analysis » functional analyses, _ functionalanalysis, functionl analysis
d functionalanalysis » _ functionalanalysis, d funktionalanalysis, 8 funktionalanalysis
22functional » 22function, 22functions
functionalanalysis » functionanalysis, functionsanalysis
functional » function, functions

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: %((((22functional analysis) OR (d functionalanalysis))) OR (functional analysis))%22.
• Adding a wildcard symbol may retrieve word variants: %((((22functional analysis) or (d functionalanalysis))) or (functional analysis))%22*.