Perhaps you should try some spelling variations:
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan nang » luan van, van nang, luan san
ho chiet » ho chieu, ho thiet, hoa thiet
cong tap » cuong tap, cong tac, tong tap
cong tan » cong tac, cong san, cong thanh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chiet) or (hoc thiet)) tach - hanh tang luan nang ((cong tap) OR (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chiet) OR (hoc thiet)) tach - hanh tang luan nang ((cong tap) OR (cong tan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chiet) or (hoc thiet)) tach - hanh tang luan nang ((cong tap) OR (cong tan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chiet) or (hoc thiet)) tach - hanh tang luan nang ((cong tap) OR (cong tan)) toan ban*.