Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chiet tach, chieu sang, chieu xanh
toan thanh » tran thanh, hoan thanh, toan thang
cong toan » cong tan, cong hoan, cong tuan
thanh ban » thanh san, thanh van, thanh bac
tranh va » tranh van, trang va, trinh va

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

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