Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nganh dong » nganh cong, nhanh dong, nganh nong
dong thuoc » dung thuoc, dang thuoc, don thuoc
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach hoc
thuoc xa » thuoc ma, thuoc va, thuoc la
nhan dan » phan dau, gian dan, nhan tai
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi cau » hoi chu, hoc cau, hoa cau
nha van » nha lanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach hoc tap, nghien cuu mon hoc nganh dong thuoc xa hoi cau ((nha van) or (nhan dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach hoc tap, nghien cuu mon hoc nganh dong thuoc xa hoi cau ((nha van) OR (nhan dan))*.