Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
chieu sach » chinh sach, chiet tach, chieu sang
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
thang va » hang va, trang va, thong va
va dung » van dung, va duong, vat dung
cong ly » cong ty, cong li, cong my
ly van » le van, ly va, ly von
van ca » van cau, van cua, dan ca

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)) - thanh thang va dung cong ly van ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sach) OR (hieu lang)) - thanh thang va dung cong ly van ca.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sach) or (hieu lang)) - thanh thang va dung cong ly van ca*.