Perhaps you should try some spelling variations:
trung pham » tung pham, trung phat, truong phan
trung phan » trung thanh, trung ha, dung phan
hieu lang » chieu sang, hieu quang, nhieu tang
cong cong » cong dong, trong cong, dung cong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong san, cong tan, huong dan
ca ban » cua ban, can ban, cac ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - thanh ((trung pham) or (trung phan)) cong cong dan ca ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - thanh ((trung pham) OR (trung phan)) cong cong dan ca ban*.