Perhaps you should try some spelling variations:
nhanh khoa » nhan khoa, nganh khoa, hang khoa
hoc nhanh » hoc nganh, hoc phan
nhan van » nhan dan, nhan va, phan van
dan nhan » danh nhan, dan chan, van nhan
khoa hoc » hoa hoc
dong hoc » dong co, dong luc
cuu dong » cuu cong, cuu tong, cuu long
hoc bai » hoc dai, hoc giai
bai hoi » bai choi, bai hoc, dai hoi
hoi dan » hoa dan, hoc dan, hoi dap
doi dap » hoi dap, doi dau, doi dam
so sach » so sanh, bo sach, co sach
do dap » do dai, do dac, do dan

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: "so sach ((doi dap) OR (do dap)), nghien cuu dong hoc nhanh khoa hoc bai hoi dan nhan van~".
• Adding a wildcard symbol may retrieve word variants: so sach ((doi dap) OR (do dap)), nghien cuu dong hoc nhanh khoa hoc bai hoi dan nhan van*.