Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tang luan » dung luan
tang cua » mang cua, hang cua, thong cua
cong dan » cong san, cong tan, huong dan
toan cao » toan tap
toan ban » van 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: hoc thieu xanh - anh ((tang cua) OR (tang luan)) nhung cong dan ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - anh ((tang cua) OR (tang luan)) nhung cong dan ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - anh ((tang cua) OR (tang luan)) nhung cong dan ((toan cao) or (toan ban))*.