Perhaps you should try some spelling variations:
how japan » how japan's, law japan, new japan
japan ren » japan re, japan real, japan rok
tong shui » cong shu, gong hui
tuan aid » can aid, tuan anh
ren yang » ren yan, chen yang, dan yang
yang jie » yang jin, yang di, yang jui
tong hui » wang hui

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: tuan aid how japan ren yang jie ((tong shui) OR (tong hui)) ;~.
• Adding a wildcard symbol may retrieve word variants: tuan aid how japan ren yang jie ((tong shui) or (tong hui)) ;*.