Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
cuong tap » luong tap, cong tac, luong tai
hanh san » thanh san, khach san, thanh son
tong tap » tuong tac, trong tan, cong tac
toan tap » toan ban
san va » san van, ban va, dan va

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 (chieu sang)) - hanh san va nhung ((tong tap) or (cuong tap)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - hanh san va nhung ((tong tap) OR (cuong tap)) toan tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - hanh san va nhung ((tong tap) or (cuong tap)) toan tap*.