Perhaps you should try some spelling variations:
dang nguong » dung nguon, dang thuong, tang nguon
theo hieu » theo chieu, theo tieu, thien hieu
hanh mang » nhanh mang, hanh trang, nhanh lang
mang cua » manh cua, dung cua, ban cua
cua dang » cua cong, cua ban
van than » van thanh, van thang, van tuan
ban hang » ngan hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu qua - hanh mang cua dang nguong ((((van than) or (dan gian))) or (ban hang)) man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu qua - hanh mang cua dang nguong ((((van than) OR (dan gian))) OR (ban hang)) man.
• Adding a wildcard symbol may retrieve word variants: theo hieu qua - hanh mang cua dang nguong ((((van than) or (dan gian))) or (ban hang)) man*.