Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
trung hanh » trung thanh, trung khanh, trung anh
hanh nhung » anh nhung, canh nhung, doanh nhung
cong thanh » dong thanh, cong trinh, cong tan
cong san » cong tac
tran van » luan van

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: hoc ((thieu xanh) OR (chieu xanh)) - thanh trung hanh nhung ((cong thanh) OR (cong san)) tran van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - thanh trung hanh nhung ((cong thanh) or (cong san)) tran van~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - thanh trung hanh nhung ((cong thanh) or (cong san)) tran van*.