Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
phan dang » phan dau, phan cong, nhan dan
va thong » va thuong, va phuong, he thong
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, quang ban
luan ban » luan van, luan san, luan han
dang va » dang van, dang vat, hang va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu nganh) or (chieu sach)) - phan dang va thong cong anh ((tuan ban) OR (luan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu nganh) OR (chieu sach)) - phan dang va thong cong anh ((tuan ban) OR (luan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu nganh) or (chieu sach)) - phan dang va thong cong anh ((tuan ban) OR (luan ban))*".