Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
nhanh mang » nhanh lang, hanh mang, nhanh quang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh nang » anh nang, ganh nang, hanh mang
quan hang » quan hoang, quan lang, quan hanh
hang cong » dang cong, hang nong, bang cong
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: hoc ((thieu xanh) OR (hieu manh)) - ((hanh nang) or (nhanh mang)) quan hang cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - ((hanh nang) OR (nhanh mang)) quan hang cong dan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - ((hanh nang) or (nhanh mang)) quan hang cong dan van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - ((hanh nang) or (nhanh mang)) quan hang cong dan van ban*.