Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
canh trang » hanh trang, banh trang, thanh trang
cong thanh » dong thanh, cong trinh, truong thanh
so thien » so thiet, so tien, su thien
cong tan » cong tac, cong san, cong ty
phan cau » phan dau, phan cac, phan tu
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: so thien hach - ((canh trang) or (canh tranh)) va tong ((cong tan) or (cong thanh)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so thien hach - ((canh trang) OR (canh tranh)) va tong ((cong tan) OR (cong thanh)) phan cau.
• Adding a wildcard symbol may retrieve word variants: so thien hach - ((canh trang) or (canh tranh)) va tong ((cong tan) or (cong thanh)) phan cau*.