Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan cong » luat cong, luong cong, luan chung
chu xanh » chu manh, chua xang, chuc danh
cong tan » cong tac, cong san, cong ty
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chu xanh) OR (chieu xanh)) - hanh tang luan cong ((cong tan) OR (cong thanh)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((chu xanh) OR (chieu xanh)) - hanh tang luan cong ((cong tan) or (cong thanh)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: chao ((chu xanh) OR (chieu xanh)) - hanh tang luan cong ((cong tan) or (cong thanh)) toan tap*.