Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
hanh tung » thanh tung, manh tung, hanh dung
hanh mang » nhanh mang, hanh trang, nhanh lang
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan
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: doc hieu xanh - ((hanh tung) or (((hanh mang) or (canh tranh)))) cua dang cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh tung) OR (((hanh mang) OR (canh tranh)))) cua dang cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh tung) or (((hanh mang) or (canh tranh)))) cua dang cong dan van ban*.