Perhaps you should try some spelling variations:
trinh nhiet » trinh thiet, trinh nghien, trinh viet
xuan thanh » quang thanh, van thanh, tran thanh
quan thanh » van thanh
ban thanh » ban hanh, ban hang
cho nguoi » cua nguoi
vien duan » vien quan, tien duan, vien luan
hoi vien » hoc vien, hoi viet, thoi hien
nam hoi » nam khoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: giao trinh nhiet ((ban thanh) or (((xuan thanh) OR (quan thanh)))) cho nguoi viet nam hoi vien duan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: giao trinh nhiet ((ban thanh) OR (((xuan thanh) OR (quan thanh)))) cho nguoi viet nam hoi vien duan.
• The words AND, OR and NOT may confuse the search; try adding quotes: "giao trinh nhiet ((ban thanh) or (((xuan thanh) OR (quan thanh)))) cho nguoi viet nam hoi vien duan".
• Adding a wildcard symbol may retrieve word variants: giao trinh nhiet ((ban thanh) or (((xuan thanh) OR (quan thanh)))) cho nguoi viet nam hoi vien duan*.