Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
khoa hoc » hoa hoc
nhan van » nhan va, phan van, nha van
nhan dan » phan dau, gian dan, nhan tai
sach mo » sach moi, sach lo, sach dao
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc cau » hoc cao, hoc cac, hoc can
mo tai » bo tai, go tai, so tai
hoc xa » hoc ma
xa hoc » xa hoi, va hoc, xa hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach mo tai, nghien cuu mon hoc nganh khoa hoc xa hoc cau ((nhan van) or (nhan dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach mo tai, nghien cuu mon hoc nganh khoa hoc xa hoc cau ((nhan van) OR (nhan dan)).
• Adding a wildcard symbol may retrieve word variants: thuat sach mo tai, nghien cuu mon hoc nganh khoa hoc xa hoc cau ((nhan van) or (nhan dan))*.