Perhaps you should try some spelling variations:
thanh trung » thanh tung
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
tac nhanh » tac nhan, tac thanh, tai nhanh
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty
nhanh va » hanh va, nhan va, nhanh ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - thanh trung ((cua tong) or (cua dong)) cong tac nhanh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - thanh trung ((cua tong) OR (cua dong)) cong tac nhanh va.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh trung ((cua tong) or (cua dong)) cong tac nhanh va*.