Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
chieu sach » chinh sach, chiet tach, chieu sang
chung cong » nhung cong, chong cong, phung cong
hieu lang » chieu sang, hieu quang, nhieu tang
thang tu » thong tu, thanh tu, hang tu
tu chung » tu vung, tu cong
cong tac » cong ty
tac dan » tac danh, cac dan, tac da

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sach) or (hieu lang)) - nhanh thang tu chung cong tac dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sach) OR (hieu lang)) - nhanh thang tu chung cong tac dan ca.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sach) or (hieu lang)) - nhanh thang tu chung cong tac dan ca*.