Perhaps you should try some spelling variations:
22functional analysis » _ functionalanalysis, functionl analysis, metafunctional analysis
d functionalanalysis » _ functionalanalysis, d funktionalanalysis, 8 funktionalanalysis
functional analyses » function analysis, functional analytic, functions 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: %((((((22functional analysis) OR (functional analysis))) OR (d functionalanalysis))) OR (functional analyses))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((((22functional analysis) OR (functional analysis))) or (d functionalanalysis))) or (functional analyses))%22".
• Adding a wildcard symbol may retrieve word variants: %((((((22functional analysis) OR (functional analysis))) or (d functionalanalysis))) or (functional analyses))%22*.