Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thanh » truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
thanh ung » thanh tung, thanh hung, thanh dung
hoc hieu » hoc thieu, hoc hien, doc hieu
dung anh » dung danh, duong anh, dong anh
tuan ban » tuan bang, quang ban, thuat ban
toan ban » van 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 - thanh trung thanh ung dung anh ((((tuan ban) OR (toan ban))) or (luan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh trung thanh ung dung anh ((((tuan ban) OR (toan ban))) OR (luan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh trung thanh ung dung anh ((((tuan ban) OR (toan ban))) or (luan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh trung thanh ung dung anh ((((tuan ban) OR (toan ban))) or (luan ban))*.