Perhaps you should try some spelling variations:
hoc nganh » hoc nhanh
nganh hoa » thanh hoa, khanh hoa, danh hoa
kenh phan » benh phau, ke phan
cach hoc » cach thuc, cach thoi, dich hoc
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
tu cach » tu cac
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: tu cach hoc tap, nghien cuu cong hoc nganh hoa hoc ma hoi ((kenh phan) or (benh nhan)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach hoc tap, nghien cuu cong hoc nganh hoa hoc ma hoi ((kenh phan) OR (benh nhan)) dau.
• Adding a wildcard symbol may retrieve word variants: tu cach hoc tap, nghien cuu cong hoc nganh hoa hoc ma hoi ((kenh phan) or (benh nhan)) dau*.