Perhaps you should try some spelling variations:
among lecturers » among letters
les patients » des patients, older patients, aids patients
patients eat » patients near, patients part, patients want
zhang zhang » zhen zhang, cheng zhang, zhang fang
yang yang » wang yang, wang yan
eat among » death among, dead among, test among
fan les » plan les

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang yang) or (zhang zhang)) fan les patients eat among lecturers ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang yang) OR (zhang zhang)) fan les patients eat among lecturers ;*.