Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
can thuong » chan thuong, han thuong, lan thuong
dan nhanh » dan hanh, dan khanh, dan thanh
doc hieu » toc thieu, hoc thieu, hoc hien
lang ban » hang ban, lang van, nang ban
cong dan » cong san, cong tan, huong dan
nhanh tu » hanh tu, nhan su, anh tu
ban can » ban dan, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (mot chieu)) sang - lang ban can thuong cong dan nhanh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (mot chieu)) sang - lang ban can thuong cong dan nhanh tu*.