Perhaps you should try some spelling variations:
phuong cham » phuong phap, phuong thao
chieu xanh » chieu sach, chieu sang, chieu tinh
toc chieu » toc thieu, doc hieu, hoc thieu
trung cap » truong cao, trung tam
dang cong » dung cong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

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 ((phuong cham) or (trung cap)) dang cong dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu xanh - thanh ((phuong cham) OR (trung cap)) dang cong dan phan dau*.