Perhaps you should try some spelling variations:
patients 10.6 » patients 10.5, patients 11.6, patients 14.6
patients 10.1 » patients 10.12, patients 10.5, patients 14.1
among masters » among partners, among farmers, among actors
lang yan » wang yan, wang yang, zhang yan
yan yang » yang yang, yao yang, dan yang
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 yang ((fan de) OR (van de)) ((patients 10.1) OR (patients 10.6)) among masters ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yan yang ((fan de) or (van de)) ((patients 10.1) OR (patients 10.6)) among masters ;~".
• Adding a wildcard symbol may retrieve word variants: lang yan yang ((fan de) or (van de)) ((patients 10.1) OR (patients 10.6)) among masters ;*.