Perhaps you should try some spelling variations:
among masters » among partners, among farmers, among actors
patients 1 » patients _
yang yang » wang yang, wang yan
yan yang » yao yang, dan yang, tan yang
van den » van der, van de
1 among » 19 among, 1.5 among, 1.8 among
jan de » van de, aan de
wang » wing, wan, lang

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 ((yan yang) OR (yang yang)) ((jan de) OR (van den)) patients 1 among masters ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yang) OR (yang yang)) ((jan de) or (van den)) patients 1 among masters ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan yang) OR (yang yang)) ((jan de) or (van den)) patients 1 among masters ;*.