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
sach thoi » cach thoi, sach hoi, sach tham
thoi tap » toi tap, hoc tap, thoi dai
van luan » van quan, van tuan, von luan
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hai van » thai van, ha van, hai tan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi

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