Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
canh trang » canh tranh, hanh trang, banh trang
thong cong » trong cong, tong cong, thong thong
trang va » tran van, hang va
va thong » va thuong, va phuong, he thong
cong san » cong tac
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chinh sach)) - canh trang va thong cong san ((phan lap) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - canh trang va thong cong san ((phan lap) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - canh trang va thong cong san ((phan lap) or (phan dau))*.