Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, dung cua
dang cong » dung cong
doc dieu » doc hieu, hoc dieu, soc dieu
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc dieu hanh - thanh ((trung cua) or (trung tuan)) dang cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc dieu hanh - thanh ((trung cua) OR (trung tuan)) dang cong van toan ban*.