Perhaps you should try some spelling variations:
among partners » paying partners, among farmers, among parents
paciente 2.15 » paciente 2.1, pacienta 2.1, pacientes 3.1
2.15 among » 1.5 among
yang yang » wang yang, wang yan
yan yang » yao yang, dan yang, tan yang
fan de » van de, jan de, can de
aan de » van de, jan 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)) ((fan de) OR (aan de)) paciente 2.15 among partners ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((yan yang) or (yang yang)) ((fan de) or (aan de)) paciente 2.15 among partners ;*.