Perhaps you should try some spelling variations:
nganh khoa » nganh hoa, nganh khong, doanh khoa
cach thoi » cac thoi, cach thuc, cach noi
khanh hoa » thanh hoa, hang hoa
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
thoi dai » hoc dai, hoi dap, hoi dan
su cach » su sach, tu cach, su cac
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoi van » hoi va, hoi dan, hai van
ma hoi » mai hoi, xa hoi, ma hoa

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 dai, nghien cuu mon hoc ((nganh khoa) or (khanh hoa)) hoc ma hoi van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach thoi dai, nghien cuu mon hoc ((nganh khoa) OR (khanh hoa)) hoc ma hoi van thanh van.
• Adding a wildcard symbol may retrieve word variants: su cach thoi dai, nghien cuu mon hoc ((nganh khoa) or (khanh hoa)) hoc ma hoi van thanh van*.