Perhaps you should try some spelling variations:
"monotypic taxon" » "monotypic talon", "monotypic faxon", "monotypic taxol", "monotypic tfaxon", "monotypic taon", "monotypic taron"
"genotypic taxon" » "genotypic talon", "genotypic faxon", "genotypic taxol", "genotipico taxon", "genotyping taxon", "phenotypic taxon", "genotypic tfaxon", "genotypic taon", "genotypic taron"
"monotypic axon" » "monotypic faxon", "monotypic aon", "monotypic aron"
"monotypic saxon" » "monotypic sfaxon", "monotypic saon", "monotypic saron", "monotypic salon", "monotypic saxo"

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