Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu xanh, hieu cach
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((chieu sach) or (chieu sang))) or (chinh sach)) - hanh tranh cua nhung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sach) OR (chieu sang))) OR (chinh sach)) - hanh tranh cua nhung cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sach) or (chieu sang))) or (chinh sach)) - hanh tranh cua nhung cong san toan ban*.