Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
cua thong » cua thuong, cua khong, cua tong
cua dong » chua dong, cua cong, cua dang
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - hanh tranh ((cua thong) or (cua dong)) cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - hanh tranh ((cua thong) OR (cua dong)) cong san toan ban*.