Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nganh khoa » nganh hoa, nganh khong, doanh khoa
hoc nganh » hoc nhanh
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
toc sach » hoc sach, doc sach, thuoc sach
khoa hoc » hoa hoc
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
hoi van » hoi va, hoi dan, hai van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (thuat sach)) hoc tap, nghien cuu mon hoc nganh khoa hoc mai hoi van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuat sach)) hoc tap, nghien cuu mon hoc nganh khoa hoc mai hoi van thanh van.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thuat sach)) hoc tap, nghien cuu mon hoc nganh khoa hoc mai hoi van thanh van*.