Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
manh chua » manh cua, tranh chua, benh chua
chua bang » chu bang, chua nang, chua xang
bang cong » dang cong, bang song, hang cong
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan tu » phan tu, han tu, chon tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (hoc thieu)) xanh - canh manh chua bang cong dan chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) xanh - canh manh chua bang cong dan chan tu*.