Perhaps you should try some spelling variations:
"monotypic taxon" » "genotypic taxon", "monotypic talon", "monotypic saxon", "monotypic taxol", "monotypic tsaxon", "monotypic taon", "monotypic taron"
"monotypic faxon" » "genotypic faxon", "monotypic saxon", "monotypic fanon", "monotypic fsaxon", "monotypic faon", "monotypic faron"
"monotypic saron" » "genotypic saron"
"monotypic axon" » "genotypic axon", "monotypic saxon", "monotypic aon", "monotypic 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 ((("monotypic faxon") OR ("monotypic saron"))))) OR ("monotypic axon"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"monotypic taxon\") OR (((\"monotypic faxon\") OR (\"monotypic saron\"))))) OR (\"monotypic axon\"))".
• Removing quotes may allow a broader search: (((( monotypic taxon ) OR ((( monotypic faxon ) OR ( monotypic saron ))))) OR ( monotypic axon )).
• Adding a wildcard symbol may retrieve word variants: (((("monotypic taxon") OR ((("monotypic faxon") OR ("monotypic saron"))))) OR ("monotypic axon"))*.