Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
sach hoc » cach hoc, sach hoi, mach hoc
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
xa thai » ca thai, a thai, xa hai
da thai » dao thai, do thai, ca thai
nhan va » nhan tai, nhan dan, nhan tao
mo hoc » mon hoc, co hoc

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 mo hoc nganh khoa hoc ((xa thai) OR (da thai)) van nhan va~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach hoc tap, nghien cuu mo hoc nganh khoa hoc ((xa thai) OR (da thai)) van nhan va".
• Adding a wildcard symbol may retrieve word variants: thuoc sach hoc tap, nghien cuu mo hoc nganh khoa hoc ((xa thai) OR (da thai)) van nhan va*.