Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nganh khong » nganh cong, nhanh chong, nganh nong
hoc nganh » hoc nhanh
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
thoi tap » toi tap, hoc tap, thoi dai
toan tap » toan ban
thuoc xa » thuoc ma, thuoc va, thuoc la
so sach » so sanh, bo sach, co sach
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
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: so sach ((thoi tap) or (toan tap)), nghien cuu mon hoc nganh khong thuoc xa hoi van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((thoi tap) OR (toan tap)), nghien cuu mon hoc nganh khong thuoc xa hoi van thanh van.
• Adding a wildcard symbol may retrieve word variants: so sach ((thoi tap) or (toan tap)), nghien cuu mon hoc nganh khong thuoc xa hoi van thanh van*.