Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nganh khoa » nganh hoa, nganh khong, anh khoa
doanh khoa » toan khoa
thai danh » thai thanh, thai binh, thai den
danh nhan » doanh nhan, thanh nhan, benh nhan
sach hoc » cach hoc, sach hoi, mach hoc
nhan dan » phan dau, gian dan, nhan tai
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
da thai » dao thai, do thai, ca thai
hoc da » hoc dan, hoc dai, hoc dat

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