Perhaps you should try some spelling variations:
dong thuong » cong thuong, dong thong, dung thuong
nhanh lang » nhanh quang, nhanh thang, nhan dang
thuong va » truong va, thong va, thuong mai
anh tang » anh bang, anh dang, anh nang
cua dong » chua dong, cua cong, cua dang
toan ban » van ban
va toan » van toan, bai toan, tap toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien hanh) OR (dieu hanh)) - ((nhanh lang) or (anh tang)) cua dong thuong va toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (dieu hanh)) - ((nhanh lang) OR (anh tang)) cua dong thuong va toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien hanh) OR (dieu hanh)) - ((nhanh lang) or (anh tang)) cua dong thuong va toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) OR (dieu hanh)) - ((nhanh lang) or (anh tang)) cua dong thuong va toan ban*.