Perhaps you should try some spelling variations:
close patients » care patients, les patients, cleft patients
among learners » among farmers, among teachers, among learning
patients eu » patients en, patients per, patients eat
wang liang » wang yang
yang yang » wang yang, wang yan
yang fan » zhang fan, yang dean, yang jin
eu among » bu among, euro among, era 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 fan) OR (yang yang)) close patients eu among learners ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang ((yang fan) OR (yang yang)) close patients eu among learners ;*".