Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tong cong » trong cong, cong cong, dung cong
hang cua » mang cua, hang ca, huong cua
tang cua » mang cua, tang luan, thong cua
cong dan » cong san, cong tan, huong dan
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap

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 - hanh ((hang cua) OR (tang cua)) tong cong dan ((than cao) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((hang cua) or (tang cua)) tong cong dan ((than cao) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((hang cua) or (tang cua)) tong cong dan ((than cao) OR (toan cao))*.