Perhaps you should try some spelling variations:
lost patients » cost patient, cleft patients, des patients
les patients » des patients, older patients, aids patients
wang liang » wang yang
liang yang » liang ying, wang yang, yang yang
among who » among hr, wrong who
along who » along two, wrong who
yang dem » yang dean, yang di, yang d

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: wang liang yang dem ((lost patients) OR (les patients)) risk ((among who) OR (along who)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang yang dem ((lost patients) or (les patients)) risk ((among who) OR (along who)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang liang yang dem ((lost patients) or (les patients)) risk ((among who) OR (along who)) ;*.