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