Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
dang nhan » dung nhan, dang nhat, danh nhan
thu sach » tu sach, thuat sach, thuoc sach
cuu tong » cuu cong, cuu tinh, huu tung
tong hoc » tuong hoc, thong hoc, trong hoc
khoa hoc » hoa hoc
hai dang » hai bang, dai dang, hoi dang
nhan tai » hang tai, van tai, toan tai
te sach » toc sach
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: ((thu sach) or (te sach)) hoc tap, nghien cuu tong hoc nganh khoa hoc xa hai dang nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) hoc tap, nghien cuu tong hoc nganh khoa hoc xa hai dang nhan tai.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) hoc tap, nghien cuu tong hoc nganh khoa hoc xa hai dang nhan tai*.