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