Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
tieu tinh » trieu tinh, tieu trinh, lieu tinh
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
tranh va » tranh van, trang va, trinh va
va thong » va thuong, va phuong, he thong

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tinh - canh tranh va thong cong toan phan tu~.
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - canh tranh va thong cong toan phan tu*.