Perhaps you should try some spelling variations:
"monotypic taxon" » "monotypic talon", "monotypic axon", "monotypic faxon"
"genotypic taxon" » "genotypic talon", "genotypic axon", "genotypic faxon", "genotipico taxon", "genotyping taxon", "phenotypic taxon"
"monotypic saxon" » "monotypic salon", "monotypic saon", "monotypic sexon", "monotypic sanon"
"monotypic saxo" » "monotypic sao", "monotypic sexo", "monotypic sano"

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 ("genotypic taxon"))) OR ((("monotypic saxon") OR ("monotypic saxo"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"monotypic taxon\") OR (\"genotypic taxon\"))) OR (((\"monotypic saxon\") OR (\"monotypic saxo\"))))".
• Removing quotes may allow a broader search: (((( monotypic taxon ) OR ( genotypic taxon ))) OR ((( monotypic saxon ) OR ( monotypic saxo )))).
• Adding a wildcard symbol may retrieve word variants: (((("monotypic taxon") OR ("genotypic taxon"))) OR ((("monotypic saxon") OR ("monotypic saxo"))))*.