Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan khoa
sach hoc » cach hoc, sach hoi, mach hoc
thai van » thi van, thanh van, thai vung
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
cuu mot » cua mot, cuu mo, huu mot
xa thai » ca thai, a thai, da thai
hoc xa » hoc ma

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 hoc tap, nghien cuu mot goc ((nganh khoa) or (doanh khoa)) hoc xa thai van nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach hoc tap, nghien cuu mot goc ((nganh khoa) OR (doanh khoa)) hoc xa thai van nhan dan.
• Adding a wildcard symbol may retrieve word variants: thuat sach hoc tap, nghien cuu mot goc ((nganh khoa) or (doanh khoa)) hoc xa thai van nhan dan*.