Perhaps you should try some spelling variations:
humor factors » tumor factors, human factors, major factors
des patient » des patients, does patient, der patient
patient der » patienten der, patient model, patient care
der humor » des humors, der human, der amor
yang jin » yang jie, yang jun, ying jin
nan ya » nan yan, nana yaa

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

• Performing a fuzzy search may retrieve terms with similar spellings: nan ya ((yang jin) or (zhang fan)) des patient der humor factors ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nan ya ((yang jin) OR (zhang fan)) des patient der humor factors ;*.