Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh nong » nganh cong
nong thuoc » dong thuoc, long thuoc, khong thuoc
giang lang » gian lang, giang van, gian lan
hoc nganh » hoc nhanh
van giang » manh giang, tran giang, dan gian
cach hoc » cach thuc, cach thoi, dich hoc
thuoc la » thuoc ma, thuoc va, thuoc tai
hai van » thai van, ha van, hai tan
cua mo » cua mot, cua moi, cua bo
mo hoc » mon hoc, co hoc
la hai » lap hai, la ai, ly hai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cach hoc) OR (sinh hoc)) tap, nghien cua mo hoc nganh nong thuoc la hai van giang lang~.
• Adding a wildcard symbol may retrieve word variants: tu ((cach hoc) or (sinh hoc)) tap, nghien cua mo hoc nganh nong thuoc la hai van giang lang*.