Perhaps you should try some spelling variations:
"monotypic axon" » "monotypic faxon", "monotypic taxon", "monotypic aon"
"monotypic saxon" » "monotypic sfaxon", "monotypic staxon", "monotypic saon", "monotypic salon", "monotypic saxo"
"genotypic axon" » "genotypic faxon", "genotypic taxon", "genotypic aon", "genotipico axon", "genotyping axon", "genotype axon"
"phenotypic axon" » "phenotypic faxon", "phenotypic taxon", "phenotypic aon", "phenotype axon", "phenotypes axon"

You may be able to get more results by adjusting your search query.

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