Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
trong luan » truong luan, tong luan, trong quan
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hieu lang » chieu sang, hieu quang, nhieu tang
thanh bac » nhanh bac, thanh bai, thanh san
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan
hanh cac » hang cac, hanh cat, hanh cham

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 lang - thanh trong luan chung cong ban ((hanh cac) or (thanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - thanh trong luan chung cong ban ((hanh cac) OR (thanh bac)).
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - thanh trong luan chung cong ban ((hanh cac) or (thanh bac))*.