Perhaps you should try some spelling variations:
cong thuong » hang thuong
hanh trinh » canh tranh, hanh chinh
thieu xanh » chieu xanh, thien anh, thien danh
thuong dan » huong dan, thuong han, thuong dam
hieu manh » chieu xanh, hieu nganh, dieu hanh
luat cong » thuat cong, luat chung, cua cong
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (hieu manh)) - hanh trinh luat cong thuong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - hanh trinh luat cong thuong dan toan cao*.