Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung cong » truong cong, trong cong, trung uong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh dung » thanh dung, anh dung, hanh dong
cua trung » cua truong, xuan trung, cua nhung
bac thanh » ban thanh, cac thanh, tai thanh
thanh hai » thanh phan, thanh hoa, thanh san
dung cua » dung luan, dung cho
cong bac » cong tac, dong bac, cong cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (chieu sach)) - hanh dung cua trung cong bac thanh hai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chieu sach)) - hanh dung cua trung cong bac thanh hai.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (chieu sach)) - hanh dung cua trung cong bac thanh hai*.