Perhaps you should try some spelling variations:
nhung duong » nhung huong, nhung tuong, chuong duong
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung dung » phuong dung, ung dung, thong dung
hien sach » dien sach, kien sach, thien hach
tranh cua » doanh cua, manh cua
tuan bang » tuan dang, tuan hoang, thuat bang
tuan ban » toan ban, luan ban, quang ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien sach - hanh tranh cua ((nhung duong) or (nhung dung)) anh ((tuan ban) OR (tuan bang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - hanh tranh cua ((nhung duong) OR (nhung dung)) anh ((tuan ban) OR (tuan bang)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - hanh tranh cua ((nhung duong) or (nhung dung)) anh ((tuan ban) OR (tuan bang))".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - hanh tranh cua ((nhung duong) or (nhung dung)) anh ((tuan ban) OR (tuan bang))*.