Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
truong cua » truong ca, truong quan, truong cao
hoc thieu » toc thieu, hoc hien
tang luan » dung luan
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh ((truong cua) or (tang luan)) dung ((cong dan) OR (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((truong cua) OR (tang luan)) dung ((cong dan) OR (cong tan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((truong cua) or (tang luan)) dung ((cong dan) OR (cong tan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((truong cua) or (tang luan)) dung ((cong dan) OR (cong tan)) toan tap*.