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

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 - hanh tran van dung cong ((dan toan) OR (manh toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh tran van dung cong ((dan toan) OR (manh toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh tran van dung cong ((dan toan) OR (manh toan)) cau*.