Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
qua nhung » quan nhung, cua nhung, qua chung
vang than » sang than, cang thang, dang thanh
hanh van » thanh van, khanh van, hanh va
van than » van thanh, van thang, van tuan
van qua » van quan, van quy, van cua

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 (chiet tach)) - hanh van qua nhung cong ((vang than) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - hanh van qua nhung cong ((vang than) OR (van than)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chiet tach)) - hanh van qua nhung cong ((vang than) or (van than)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chiet tach)) - hanh van qua nhung cong ((vang than) or (van than)) cau*.