Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
chua dong » ha dong, huy dong, hoa dong
doc hieu » toc thieu, hoc thieu, hoc hien
cua dong » cua cong, cua dang, cua nong
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu manh - thanh tung ((cua dong) or (chua dong)) cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - thanh tung ((cua dong) OR (chua dong)) cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - thanh tung ((cua dong) or (chua dong)) cong san phan cau*.