Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
toc chieu » toc thieu, doc hieu, hoc thieu
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
tung ho » tuong ho, trung hoc, trung hoa
ho dung » hoc dung, hoi dung, so dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu xanh - thanh tung ho dung ((cong tan) or (huong dan)) ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu xanh - thanh tung ho dung ((cong tan) OR (huong dan)) ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: toc chieu xanh - thanh tung ho dung ((cong tan) or (huong dan)) ((toan cau) or (toan tap))*.