Perhaps you should try some spelling variations:
obese patients » des patients, les patients, where patients
wang liang » wang yang
liang yang » liang ying, wang yang, yang yang
can obese » can best
yang can » yang fan, yang dean, yang yang
bu among » 1 among
eu among » euro among, era among, erm among

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang liang yang can obese patients ((((bu among) OR (eu among))) or (19 among)) letters ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang yang can obese patients ((((bu among) OR (eu among))) OR (19 among)) letters ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang yang can obese patients ((((bu among) OR (eu among))) or (19 among)) letters ;*".