Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nhan thuoc » nhan thuc, nha thuoc, khang thuoc
hoa doanh » toan doanh, hoa dan
dich hoc » sinh hoc, hinh hoc, tinh hoc
cong hoa » dong hoa, dong hoc, hang hoa
thuoc va » thuc va, thuoc ma, thuong va
tu dich » te dich, chu dich, hut dich
va phan » van phan, va phat, va phap
va hoi » xa hoi, va hoc, va hoa
va nha » va nho, ve nha

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu dich hoc tap, nghien cua cong hoa doanh nhan thuoc va hoi ((va nha) or (va phan)) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu dich hoc tap, nghien cua cong hoa doanh nhan thuoc va hoi ((va nha) OR (va phan)) van.
• Adding a wildcard symbol may retrieve word variants: tu dich hoc tap, nghien cua cong hoa doanh nhan thuoc va hoi ((va nha) or (va phan)) van*.