Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua dang » cua cong, cua ban
cong san » cong tac
chat cao » chat co, chat cho, chat bao
chat cam » thuat cam, chat va, chat ban
doi chi » doi khi

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 (doi chi)) xanh - hanh trinh cua dang cong san ((chat cao) or (chat cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (doi chi)) xanh - hanh trinh cua dang cong san ((chat cao) OR (chat cam)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (doi chi)) xanh - hanh trinh cua dang cong san ((chat cao) or (chat cam))*.