Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
luat hang » luat hanh, luat chung, luat quang
nong danh » nong dan, cong danh, dong danh
dung danh » dung doanh, dung dan, cuong danh
thanh bac » nhanh bac, thanh bai, thanh san
hoc hieu » hoc thieu, hoc hien, doc hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - hanh trinh luat hang ((nong danh) or (dung danh)) thanh bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - hanh trinh luat hang ((nong danh) OR (dung danh)) thanh bac*.