Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
theo chieu » theo tieu, ho chieu, thi chieu
tranh cua » doanh cua, manh cua
doc hieu » toc thieu, hoc thieu, hoc hien
theo chu » cho chu, chao chu, theo yeu
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (((theo chieu) or (theo chu)))) xanh - hanh tranh cua ban cong dan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (((theo chieu) OR (theo chu)))) xanh - hanh tranh cua ban cong dan chan cau.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (((theo chieu) or (theo chu)))) xanh - hanh tranh cua ban cong dan chan cau*.