Perhaps you should try some spelling variations:
nhanh khong » nhanh chong, nganh khong, nhan khong
khong thuoc » khang thuoc, hong phuoc, dong thuoc
dang thanh » dong thanh, dang hanh, hoang thanh
hoc nhanh » hoc nganh, hoc phan
thuoc dai » thuoc tai, thuoc dac, thuoc sai
thanh van » thanh san, thanh toan, thanh phan
hach hoc » cach hoc, hoach hoi, hoach hoa
mach hoc » cach hoc, dich hoc, anh hoc
hoi dang » hoi dan, hoi lang, hoi dong
dai hoi » dai hoc, dai hai, dai moi
mo hoc » mon hoc, co hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((hach hoc) OR (mach hoc)) tap, nghien cuu mo hoc nhanh khong thuoc dai hoi dang thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((hach hoc) OR (mach hoc)) tap, nghien cuu mo hoc nhanh khong thuoc dai hoi dang thanh van".
• Adding a wildcard symbol may retrieve word variants: tu ((hach hoc) OR (mach hoc)) tap, nghien cuu mo hoc nhanh khong thuoc dai hoi dang thanh van*.