Perhaps you should try some spelling variations:
"phenotypic taxon" » "phenotype taxon", "genotypic taxon", "phenotypes taxon", "phenotypic talon", "phenotypic saxon", "phenotypic faxon", "phenotypic tsaxon", "phenotypic tfaxon", "phenotypic taon"
"phenotypic tan" » "phenotype tan", "genotypic tan", "phenotypes tan"
"genotyping axon" » "genotypic axon", "genotyping saxon", "genotyping faxon", "genotyping aon"
"monotypic saxo" » "genotypic 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: (((((("phenotypic taxon") OR ("phenotypic tan"))) OR ("genotyping axon"))) OR ("monotypic saxo"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"phenotypic taxon\") OR (\"phenotypic tan\"))) OR (\"genotyping axon\"))) OR (\"monotypic saxo\"))*".
• Removing quotes may allow a broader search: (((((( phenotypic taxon ) OR ( phenotypic tan ))) OR ( genotyping axon ))) OR ( monotypic saxo ))*.