Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » canh tranh, hanh trinh, canh tinh
luat chong » luat chung, luat cong, luat thong
hoc thieu » toc thieu, hoc hien
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh trinh luat chong ((cong dan) OR (cong tan)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh trinh luat chong ((cong dan) OR (cong tan)) toan cau*.