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

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 lang - hanh mang cua dang nguong ((dan than) or (ban thanh)) man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh mang cua dang nguong ((dan than) OR (ban thanh)) man.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh mang cua dang nguong ((dan than) or (ban thanh)) man*.