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, danh nhan, anh nhan
hanh han » hanh phan, hanh san, anh han
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban 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 han) or (hanh nhan)) va thuong cong tan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (dieu hanh)) - ((hanh han) OR (hanh nhan)) va thuong cong tan than tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (dieu hanh)) - ((hanh han) or (hanh nhan)) va thuong cong tan than tap*.