Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » hanh trinh, hanh trang, lanh tranh
thong cong » trong cong, tong cong, thong thong
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van
van dau » van dao, phan dau

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) or (canh tranh)) cua thong cong tan van dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - ((hanh tranh) OR (canh tranh)) cua thong cong tan van dau.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - ((hanh tranh) or (canh tranh)) cua thong cong tan van dau*.