Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
sach hoc » cach hoc, sach hoi, mach hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
dac nhan » cac nhan, danh nhan, cac nha
vu sach » vu bach, su sach, vu khach
hoc xa » hoc ma

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach hoc tap, nghien cuu dong hoc nhanh hoa hoc xa hoi ((dac nhan) OR (ca nhan)) dan~".
• Adding a wildcard symbol may retrieve word variants: vu sach hoc tap, nghien cuu dong hoc nhanh hoa hoc xa hoi ((dac nhan) OR (ca nhan)) dan*.