Perhaps you should try some spelling variations:
hoc nhanh » hoc nganh, hoc phan
nhanh hoa » nhanh hoan, thanh hoa, khanh hoa
mach hoc » cach hoc, dich hoc, anh hoc
cuu cong » cua cong, thu cong, cac cong
hieu mot » thieu mot, hieu moi, hieu so
nhan dan » phan dau, gian dan, nhan tai
tu mach » tu cach, tu manh, tu hach
hoc mai » hoc ma, hoc dai, hoc bai
mai hoi » mai khoi, dai hoi, lai hoi
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu mach hoc tap, nghien ((cuu cong) or (hieu mot)) hoc nhanh hoa hoc mai hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu mach hoc tap, nghien ((cuu cong) OR (hieu mot)) hoc nhanh hoa hoc mai hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu mach hoc tap, nghien ((cuu cong) or (hieu mot)) hoc nhanh hoa hoc mai hoi va nhan dan*.