Perhaps you should try some spelling variations:
among masters » among partners, among farmers, among actors
patients 1 » patients _
wang yang » wang yan, wang liang, wang yanling
lang yan » wang yan, zhang yan, yang yang
1 among » 19 among, 1.5 among, 1.8 among
fan de » aan de, jan de, can de
van de » van der, van den

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