Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
khong cong » thong cong, khong cang, chong cong
cua khong » hua khong, cua phuong, cua thuong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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) or (chieu sach)) - ((thanh trung) or (thanh tung)) cua khong cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu sach)) - ((thanh trung) OR (thanh tung)) cua khong cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu sach)) - ((thanh trung) or (thanh tung)) cua khong cong dan than cau*.