Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
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 san » cong tac
san van » tan van, luan van, tran 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 ((thien danh) or (hieu manh)) - ((hanh nang) or (nhanh mang)) quan hang cong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (hieu manh)) - ((hanh nang) OR (nhanh mang)) quan hang cong san van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (hieu manh)) - ((hanh nang) or (nhanh mang)) quan hang cong san van ban*.