Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
manh trung » thanh trung, manh hung, sinh trung
hoc thiet » hoc thieu, hoc thuyet, hoc hien
manh tung » manh hung, thanh tung
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
cong tan » cong tac, cong san, cong thanh
tran bai » toan bai, tran hai, trang tai
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tach - ((manh trung) OR (manh tung)) cua hang cong tan ((tran bai) or (tran van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - ((manh trung) OR (manh tung)) cua hang cong tan ((tran bai) OR (tran van))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tach - ((manh trung) OR (manh tung)) cua hang cong tan ((tran bai) or (tran van))*".