Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
canh tran » canh tranh, hanh trang, banh trang
dung cong » dung trong
tran van » luan van
van dung » van dong, xay dung, tin dung
dan toan » van toan, dan than, manh toan
van than » van thanh, van thang, van tuan

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 xanh - canh tran van dung cong ((dan toan) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - canh tran van dung cong ((dan toan) OR (van than)) cau*.