Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung phat » truong phat, trong phat, trung phan
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
trung pha » trung phan, trung ha, truong phan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: hoc chieu xanh - hanh ((trung pha) or (trung phat)) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh ((trung pha) OR (trung phat)) nhung cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh ((trung pha) or (trung phat)) nhung cong dan toan cao*.