Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
cong luan » tong luan, cong tuan, dong luan
hanh cham » thanh pham, hanh lam, hanh nam
nhanh bac » nhanh ha, nhanh va
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu quang - thanh cong luan chung cong ban ((hanh cham) or (nhanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu quang - thanh cong luan chung cong ban ((hanh cham) OR (nhanh bac)).
• Adding a wildcard symbol may retrieve word variants: doc hieu quang - thanh cong luan chung cong ban ((hanh cham) or (nhanh bac))*.