Perhaps you should try some spelling variations:
tieu thanh » tien thanh, kieu thanh, dien thanh
hanh mang » nhanh mang, hanh trang, nhanh lang
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
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: theo tieu thanh - ((hanh mang) or (anh tang)) cua dung cong tac ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu thanh - ((hanh mang) OR (anh tang)) cua dung cong tac ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo tieu thanh - ((hanh mang) or (anh tang)) cua dung cong tac ((toan tap) or (toan ban))*.