Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thieu xanh » chieu xanh, hieu manh, thien anh
hanh nhan » thanh nhan, anh nhan, hanh han
danh nhan » doanh nhan, thanh nhan, benh nhan
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan 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 (dieu hanh)) - ((hanh nhan) or (danh nhan)) va thuong cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (dieu hanh)) - ((hanh nhan) OR (danh nhan)) va thuong cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (dieu hanh)) - ((hanh nhan) or (danh nhan)) va thuong cong dan than tap*.