Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than tap » han tap, phan tap, than cap
toan tap » toan 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: toc thieu xanh - hanh tranh cua dung ((cong dan) OR (cong tan)) ((than tap) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu xanh - hanh tranh cua dung ((cong dan) or (cong tan)) ((than tap) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh tranh cua dung ((cong dan) or (cong tan)) ((than tap) OR (toan tap))*.