Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, hien hanh
hanh han » hanh nhan, hanh phan, hanh san
va thong » va thuong, va phuong, he thong
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than tap » toan tap, han tap, phan tap
han va » hang va, hanh va, nhan va

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))) or (dieu hanh)) - hanh han va thong cong ban than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu xanh) OR (hieu manh))) OR (dieu hanh)) - hanh han va thong cong ban than tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thieu xanh) OR (hieu manh))) or (dieu hanh)) - hanh han va thong cong ban than tap*".