Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung chan » trong chan, trung can, trung nhan
trung phan » trung thanh, trung ha, dung phan
ho chieu » theo chieu, hoc thieu, doi chieu
cac toan » cac khoan, hach toan, cac thanh
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - thanh ((trung chan) or (trung phan)) dung trong cac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh ((trung chan) OR (trung phan)) dung trong cac toan cau*.