Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
canh trang » hanh trang, banh trang, thanh trang
dung cong » dung trong
so thien » so thiet, so tien, su thien
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu
va dung » van dung, va duong, vat dung

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 dung cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so thien hach - ((canh trang) OR (canh tranh)) va dung cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: so thien hach - ((canh trang) or (canh tranh)) va dung cong san phan cau*.