Perhaps you should try some spelling variations:
truong cua » truong ca, truong quan, truong cao
trung tuan » trung thanh, trung tam, tran tuan
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than ban » thanh ban, toan ban, than man

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: doc hieu xanh - thanh ((truong cua) OR (trung tuan)) trong cong tan than ban~.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh ((truong cua) or (trung tuan)) trong cong tan than ban*.