Perhaps you should try some spelling variations:
nhanh lang » nhanh quang, nhanh thang, nhan dang
theo dien » theo tieu, thu dien, thuy dien
dien sach » dien anh
lang luan » tang luan, hang luan, bang luan
luan han » luan hoan, luan phan, luan van
cong dan » cong san, cong tan, cong dong
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo dien sach - nhanh lang luan han ((cong dan) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo dien sach - nhanh lang luan han ((cong dan) OR (huong dan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: theo dien sach - nhanh lang luan han ((cong dan) or (huong dan)) toan cau*.