Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
cuu dong » cuu cong, cuu tong, cuu long
co nganh » hoc nganh, cac nganh, moi nganh
thuoc xa » thuoc ma, thuoc va, thuoc la
van nhan » van phan, van thanh, danh nhan
te sach » toc sach
nhan va » nhan tai, nhan dan, nhan tao
ha van » hoa van, nha van, va van
xa ha » xa hoa, xa hai, la ha

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) or (te sach)) hoc tap, nghien cuu dong co nganh khong thuoc xa ha van nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (te sach)) hoc tap, nghien cuu dong co nganh khong thuoc xa ha van nhan va.
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) or (te sach)) hoc tap, nghien cuu dong co nganh khong thuoc xa ha van nhan va*.