Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
chua xang » chua nang, chuc nang, chu bang
luan tong » luan tuong, luan cong, luan dong
thanh ban » thanh san, thanh van, thanh bac
chu xanh » chu manh, chieu xanh, chuc danh
cong tan » cong tac, cong san, cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho ((chu xanh) or (chua xang)) - sach dung luan tong ((cong tan) or (cong thanh)) thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho ((chu xanh) OR (chua xang)) - sach dung luan tong ((cong tan) OR (cong thanh)) thanh ban.
• Adding a wildcard symbol may retrieve word variants: cho ((chu xanh) or (chua xang)) - sach dung luan tong ((cong tan) or (cong thanh)) thanh ban*.