Perhaps you should try some spelling variations:
khang thuoc » khong thuoc, dang thuoc, hanh thuoc
hoc nhanh » hoc phan
kon mach » ke mach, ban mach
mach hoc » cach hoc, dich hoc, anh hoc
cuu dong » cuu cong, cuu tong, cuu long
thuoc va » thuc va, thuoc ma, thuong va
hoi cua » hoi chuc
cua han » cua hang, cua nhan, cua phan
han dau » hang dau, phan dau, van dau
va hoi » xa hoi, va hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: kon mach hoc tap, nghien cuu dong ((hoc nganh) or (hoc nhanh)) khang thuoc va hoi cua han dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: kon mach hoc tap, nghien cuu dong ((hoc nganh) OR (hoc nhanh)) khang thuoc va hoi cua han dau.
• Adding a wildcard symbol may retrieve word variants: kon mach hoc tap, nghien cuu dong ((hoc nganh) or (hoc nhanh)) khang thuoc va hoi cua han dau*.