Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hien nhanh » hien hanh, tien thanh, dien thanh
trung nam » trung tam, trong nam, trung cap
dung cong » dung trong
trung ca » trung cap, truong ca, trung cua
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan tap » toan 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 nhanh) or (thien thanh)) - hanh ((trung ca) or (trung nam)) dung cong van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (thien thanh)) - hanh ((trung ca) OR (trung nam)) dung cong van toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (thien thanh)) - hanh ((trung ca) or (trung nam)) dung cong van toan tap*.