Perhaps you should try some spelling variations:
close patients » care patients, les patients, cleft patients
among letters » among lecturers, among learners, among masters
patients en » patients per, patients _, patients 1
liang yang » wang yang, yang yang, huang yang
liang ying » liang liying, huang ying, zhang ying
can close » can lose, a close, can cause
en among » en amont, eu among, even 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) or (liang ying)) can close patients en among letters ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((liang yang) OR (liang ying)) can close patients en among letters ;*.