Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
tuong tac » cong tac, luong tai, tuong lai
dung cong » dung trong
tung tam » trung tam, vung tam, duong tam
dung tam » duong tam, dung tai, dung lam
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: hoc hien xanh - thanh ((((tung tam) or (tuong tac))) or (dung tam)) dung cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh ((((tung tam) OR (tuong tac))) OR (dung tam)) dung cong van toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - thanh ((((tung tam) or (tuong tac))) or (dung tam)) dung cong van toan ban*.