Perhaps you should try some spelling variations:
khong thuoc » khang thuoc, hong phuoc, dong thuoc
nhanh khong » nhanh chong, nganh khong, nhan khong
hoc nhanh » hoc nganh, hoc phan
thuoc dai » thuoc tai, thuoc dac, thuoc sai
dan thanh » dang thanh, danh thanh, ban thanh
thanh van » thanh san, thanh toan, thanh phan
mach hoc » cach hoc, dich hoc, bac hoc
anh hoc » sinh hoc, benh hoc, hinh hoc
dai hoi » dai hoc, dai hai, dai moi
hoi dan » hoa dan, hoc dan, hoi dap
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 ((mach hoc) OR (anh hoc)) tap, nghien cuu mo hoc nhanh khong thuoc dai hoi dan thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((mach hoc) OR (anh hoc)) tap, nghien cuu mo hoc nhanh khong thuoc dai hoi dan thanh van".
• Adding a wildcard symbol may retrieve word variants: tu ((mach hoc) OR (anh hoc)) tap, nghien cuu mo hoc nhanh khong thuoc dai hoi dan thanh van*.