Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
hanh bang » anh bang, hanh mang, lanh bang
bang luan » tang luan, hang luan, dung luan
ho chieu » theo chieu, doi chieu, mot chieu
san tran » tan tran, ban tran, dang tran
tran ban » tranh ban, tran van, toan 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 chieu) OR (hoc thieu)) sach - hanh bang luan ((nhung cong) or (thong cong)) san tran ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - hanh bang luan ((nhung cong) OR (thong cong)) san tran ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - hanh bang luan ((nhung cong) or (thong cong)) san tran ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - hanh bang luan ((nhung cong) or (thong cong)) san tran ban*.