Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cua thong » cua thuong, cua khong, cua tong
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, cong dong
khan cap » than cap, khoan cam, phan cac
khan ap » han ap, khan dam

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 - canh manh cua thong ((cong dan) OR (huong dan)) ((khan cap) OR (khan ap))~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh manh cua thong ((cong dan) or (huong dan)) ((khan cap) or (khan ap))*.