Perhaps you should try some spelling variations:
thanh tuong » thanh thuong, thanh tung, thanh huong
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tuong ung » huong ung, tong ung, duong ung
cong hoan » cong hoa, dong hoa, cong san
cong tan » cong tac, cong san, cong thanh

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 - thanh tuong ung dung ((cong tan) or (cong hoan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - thanh tuong ung dung ((cong tan) OR (cong hoan)) phan tu*.