Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nhanh khong » nhanh chong, nganh khong, nhan khong
nghien cua » nghien cuu, nghiep cua, nghiep vua
hoc nhanh » hoc nganh, hoc phan
thuoc dai » thuoc tai, thuoc dac, thuoc sai
mach hoc » cach hoc, dich hoc, anh hoc
cua toan » cuu toan, xuan toan, cua thanh
toan hoc » toan khoa, van hoc, hoa hoc
nhan dan » phan dau, gian dan, nhan tai
dai hoi » dai hoc, dai hai, dai moi
hoi ca » hoi cua, hoi cac, hoi cau

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) or (sinh hoc)) tap, nghien cua toan hoc nhanh khong thuoc dai hoi ca nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((mach hoc) OR (sinh hoc)) tap, nghien cua toan hoc nhanh khong thuoc dai hoi ca nhan dan.
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) or (sinh hoc)) tap, nghien cua toan hoc nhanh khong thuoc dai hoi ca nhan dan*.