Perhaps you should try some spelling variations:
"monotypic tfaxon" » "genotypic tfaxon", "monotypic taxon", "monotypic tfanon", "monotypic ttaxon", "monotypic tftaxon", "monotypic tfaon", "monotypic tfaron"
"monotypic faxon" » "genotypic faxon", "monotypic fanon", "monotypic taxon", "monotypic ftaxon", "monotypic faon", "monotypic faron"
"monotypic axon" » "genotypic axon", "monotypic taxon", "monotypic aon", "monotypic aron"
"monotypic saxon" » "genotypic saxon", "monotypic staxon", "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 tfaxon") OR ("monotypic faxon"))) OR ("monotypic axon"))) OR ("monotypic saxon"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"monotypic tfaxon\") OR (\"monotypic faxon\"))) OR (\"monotypic axon\"))) OR (\"monotypic saxon\"))".
• Removing quotes may allow a broader search: (((((( monotypic tfaxon ) OR ( monotypic faxon ))) OR ( monotypic axon ))) OR ( monotypic saxon )).
• Adding a wildcard symbol may retrieve word variants: (((((("monotypic tfaxon") OR ("monotypic faxon"))) OR ("monotypic axon"))) OR ("monotypic saxon"))*.