Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, nhan sinh
hanh trinh » canh tranh, hanh chinh
chi xanh » chi anh, chi danh, chi hanh
cua dang » cua cong
cong dan » cong san, cong tan, huong dan
doi chi » doi khi
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - ((nhanh tinh) or (hanh trinh)) ((cua dang) or (cua ban)) cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - ((nhanh tinh) OR (hanh trinh)) ((cua dang) OR (cua ban)) cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - ((nhanh tinh) or (hanh trinh)) ((cua dang) or (cua ban)) cong dan van ban*.