Perhaps you should try some spelling variations:
"monotypic taxon" » "monotypic talon", "monotypic saxon", "monotypic taxol", "monotypic tsaxon", "monotypic taon", "monotypic taron"
"phenotypic taxon" » "phenotypic talon", "phenotypic saxon", "phenotypic taxol", "phenotype taxon", "phenotypes taxon", "phenotypic tsaxon", "phenotypic taon", "phenotypic taron"
"genotypic faxon" » "genotipico faxon", "genotyping faxon", "genotype faxon", "genotypic saxon", "genotypic fanon", "genotypic fsaxon", "genotypic faon", "genotypic faron"
"genotypic axon" » "genotipico axon", "genotyping axon", "genotype axon", "genotypic saxon", "genotypic aon", "genotypic aron"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("monotypic taxon") OR ((((("phenotypic taxon") OR ("genotypic faxon"))) OR ("genotypic axon"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"monotypic taxon\") OR (((((\"phenotypic taxon\") OR (\"genotypic faxon\"))) OR (\"genotypic axon\"))))".
• Removing quotes may allow a broader search: (( monotypic taxon ) OR ((((( phenotypic taxon ) OR ( genotypic faxon ))) OR ( genotypic axon )))).
• Adding a wildcard symbol may retrieve word variants: (("monotypic taxon") OR ((((("phenotypic taxon") OR ("genotypic faxon"))) OR ("genotypic axon"))))*.