Perhaps you should try some spelling variations:
thanh nhan » thanh phan, thanh san, thanh toan
phan dung » phan ung, phan dang, chan dung
cach noi » cach thoi, hanh noi, anh noi
hoc phan » hoc dan, hoc pho
dung hoc » dong hoc, dung thuoc, trung hoc
su cach » su sach, tu cach, su cac
noi dap » hoi dap, noi da, doi dap
cuu mon » cuu mo, cuu mot, cuu cong
mon hoc » toan hoc, dong hoc
hoc may » hoc ma
may hoi » may thoi, tay hoi, mai 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: su cach noi dap, nghien cuu mon hoc phan dung hoc may hoi ((va nhan) or (thanh nhan)) va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach noi dap, nghien cuu mon hoc phan dung hoc may hoi ((va nhan) OR (thanh nhan)) va*.