Perhaps you should try some spelling variations:
nhanh chong » thanh cong, khanh phong
chong chuan » chung chuan, thong chuan, chong chay
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, mot chieu
cong cong » cong dong, trong cong, dung cong
tong cong » trong cong, dung cong, dang cong
tran van » luan van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - nhanh chong chuan ((cong cong) OR (tong cong)) tan tran van~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - nhanh chong chuan ((cong cong) or (tong cong)) tan tran van*.