Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hanh tang » anh tang, hanh mang, hanh tung
dong cong » duong cong, dung cong, dang cong
doc hieu » hoc thieu, hoc hien
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » 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: ((doc hieu) OR (toc thieu)) sang - ((hanh tang) OR (hanh trang)) cua dong cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) sang - ((hanh tang) or (hanh trang)) cua dong cong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) sang - ((hanh tang) or (hanh trang)) cua dong cong dan toan cau*.