Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang luan » tang luan, dung luan
dang cong » dung cong
tran tap » toan tap, tran tan, tran tuan
luan va » luan van, luat va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sach)) - hang luan va ((nhung cong) or (dang cong)) tan tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - hang luan va ((nhung cong) OR (dang cong)) tan tran tap.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - hang luan va ((nhung cong) or (dang cong)) tan tran tap*.