Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, thien anh, thien danh
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » thong cong, hang cong, nhung don
hieu manh » chieu xanh, hieu nganh, dieu hanh
dung cong » dung trong
ban thanh » ban hanh, ban hang
thanh cao » thanh ca, thanh cac, thanh thao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh trung tuan ((nhung cong) OR (dung cong)) ban thanh cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - thanh trung tuan ((nhung cong) or (dung cong)) ban thanh cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - thanh trung tuan ((nhung cong) or (dung cong)) ban thanh cao*.