Perhaps you should try some spelling variations:
nganh khong » nganh cong, nhanh chong, nganh nong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
cach thoi » cac thoi, cach thuc, cach noi
hoc nganh » hoc nhanh
thoi tap » toi tap, hoc tap, thoi dai
cuu toan » cuu hoan, cua toan, huu toan
huy toan » huy tran, huu toan, huy hoang
thuoc xa » thuoc ma, thuoc va, thuoc la
van nhan » van phan, van thanh, danh nhan
tu cach » tu cac
hoi van » hoi va, hoi dan, hai van
nhan va » nhan tai, nhan dan, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach thoi tap, nghien ((cuu toan) or (huy toan)) hoc nganh khong thuoc xa hoi van nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach thoi tap, nghien ((cuu toan) OR (huy toan)) hoc nganh khong thuoc xa hoi van nhan va.
• Adding a wildcard symbol may retrieve word variants: tu cach thoi tap, nghien ((cuu toan) or (huy toan)) hoc nganh khong thuoc xa hoi van nhan va*.