Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
tuong anh » truong anh, tuong lanh, trong anh
hoc hieu » hoc thieu, hoc hien, doc hieu
cua bang » chua bang, cua dang, cua hang
tuan ban » tuan bang, toan ban, quang ban
luan ban » luan van, luan san, luan han

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - doanh doanh ((cua bang) or (cua ban)) tuong anh ((tuan ban) OR (luan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - doanh doanh ((cua bang) OR (cua ban)) tuong anh ((tuan ban) OR (luan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - doanh doanh ((cua bang) or (cua ban)) tuong anh ((tuan ban) OR (luan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - doanh doanh ((cua bang) or (cua ban)) tuong anh ((tuan ban) OR (luan ban))*.