Perhaps you should try some spelling variations:
among partners » paying partners, among farmers, among parents
among letters » among lecturers, among learners, among masters
des patients » des patents, les patients, des patienten
patients 1.8 » patients 10.1, patients 10.5, patients 10.6
yuhan chang » yuan chang, han chang, yuhuan huang
wang yuhan » wang luhang, wang yan, wang yidan
plan des » plan de, bilan des, plan du

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 yuhan chang plan des patients 1.8 ((among letters) OR (among partners)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yuhan chang plan des patients 1.8 ((among letters) or (among partners)) ;*.