Perhaps you should try some spelling variations:
tuong cong » truong cong, trong cong, tong cong
viet tach » viet sach, viet tech, viet thanh
tranh va » tranh van, trang va, trinh va
va tuong » va thuong, va thong, xa truong
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: (hoa or khoa) viet tach - canh tranh va tuong cong san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (hoa OR khoa) viet tach - canh tranh va tuong cong san phan cau.
• Adding a wildcard symbol may retrieve word variants: (hoa or khoa) viet tach - canh tranh va tuong cong san phan cau*.