Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh
den thanh » de thanh, dinh thanh, dong thanh
doanh cua » doanh luan
trung cap » truong cao, trung tam
dang cong » dung cong
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 ((tien thanh) or (den thanh)) - hanh ((doanh cua) or (trung cap)) dang cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien thanh) OR (den thanh)) - hanh ((doanh cua) OR (trung cap)) dang cong van toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien thanh) or (den thanh)) - hanh ((doanh cua) or (trung cap)) dang cong van toan ban*.