Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
trung hanh » trung thanh, trung khanh, trung anh
hanh nhung » anh nhung, canh nhung, doanh nhung
hoc thieu » toc thieu, hoc hien
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
tran van » luan van

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

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