Perhaps you should try some spelling variations:
thanh nhan » thanh phan, thanh san, thanh toan
nganh nong » nganh cong
nghien huu » nghien cuu, nguyen huu, nhiem huu
hoc nganh » hoc nhanh
hop thanh » hoc thanh, hoa thanh, ho thanh
nong hoc » dong hoc, nang hoc, nong thon
tung hoc » trung hoc, tuong hoc, dung hoc
cach toi » cach thoi, cac toi, hoach toi
cach noi » cach thoi, hanh noi, anh noi
nhan dan » phan dau, gian dan, nhan tai
hoc xa » hoc ma
xa hop » xa hoi, va hop, xa hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuc ((cach toi) or (cach noi)) tap, nghien huu tung hoc nganh nong hoc xa hop thanh nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuc ((cach toi) OR (cach noi)) tap, nghien huu tung hoc nganh nong hoc xa hop thanh nhan dan.
• Adding a wildcard symbol may retrieve word variants: thuc ((cach toi) or (cach noi)) tap, nghien huu tung hoc nganh nong hoc xa hop thanh nhan dan*.