Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep bac
nghiep cay » nghiep chan, nghiep va, nghiep cua
dong thuoc » dung thuoc, dang thuoc, don thuoc
nganh dong » nganh cong, nhanh dong, nganh nong
hoc nganh » hoc nhanh
thuoc tai » nuoc tai, hoc tai, thuoc ma
nhan dan » phan dau, gian dan, nhan tai
cau nhan » chau nhan, ca nhan, cu nhan
dong hoc » dong co, dong luc
cach tuc » cach thuc, cach tu, bach tuoc
tai hai » thi hai, dai hai, tai ha
hai cau » hai chau, hai chu, hai hau
tu cach » tu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach tuc tap, ((nghien cac) or (nghiep cay)) dong hoc nganh dong thuoc tai hai cau nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach tuc tap, ((nghien cac) OR (nghiep cay)) dong hoc nganh dong thuoc tai hai cau nhan dan*.