Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung hong » nhung chong, nhung huong, nhung phong
hieu lang » chieu sang, hieu quang, nhieu tang
quang va » quang van, quan va, quang ma
hong van » hoang van, thong van, phong van
van than » van thanh, van thang, van tuan
than cap » khan cap, thanh lap, thanh 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 ((chieu sach) or (hieu lang)) - nhanh quang va nhung hong van than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (hieu lang)) - nhanh quang va nhung hong van than cap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (hieu lang)) - nhanh quang va nhung hong van than cap*.