Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
van thanh » ban thanh, van tuan
trang va » tran van, hang va
dan toan » van toan, dan than, manh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (thien thanh)) - hanh trang va nhung cong ((dan toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (thien thanh)) - hanh trang va nhung cong ((dan toan) OR (van thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (thien thanh)) - hanh trang va nhung cong ((dan toan) or (van thanh)) cau*.