Perhaps you should try some spelling variations:
opto-rhino-laryngology" » otto-rhino-laryngology", onto-rhino-laryngology", opt-rhino-laryngology", opto-reino-laryngology"
opto-rhino-otolaryngology" » otto-rhino-otolaryngology", onto-rhino-otolaryngology", opt-rhino-otolaryngology", opto-reino-otolaryngology"
opto-rhine-otolaryngology" » otto-rhine-otolaryngology", onto-rhine-otolaryngology", opt-rhine-otolaryngology", opto-chine-otolaryngology"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: "(advances or advanced) in (opto-rhino-laryngology" OR (opto-rhino-otolaryngology" OR opto-rhine-otolaryngology")).
• Removing quotes may allow a broader search: (advances or advanced) in (opto-rhino-laryngology or (opto-rhino-otolaryngology OR opto-rhine-otolaryngology )).
• Adding a wildcard symbol may retrieve word variants: "(advances or advanced) in (opto-rhino-laryngology" or (opto-rhino-otolaryngology" OR opto-rhine-otolaryngology"))*.