Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep cua, nghiep vua
nganh cong » nhanh chong, thanh cong
cong thuoc » cong thuc, dong thuoc, long thuoc
hoc nganh » hoc nhanh
sach moi » sach doi, sach hoi, bach mai
cong hoc » dong hoc, cong hoa, cong coc
thuoc xa » thuoc ma, thuoc va, thuoc la
te sach » toc sach
moi dap » hoi dap, doi dap, moi dan
va nhan » van nhan, ca nhan, va nha
va phan » van phan, va phat, va phap

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: te sach moi dap, nghien cua cong hoc nganh cong thuoc xa hoi ((va nhan) OR (va phan)) van~.
• Adding a wildcard symbol may retrieve word variants: te sach moi dap, nghien cua cong hoc nganh cong thuoc xa hoi ((va nhan) or (va phan)) van*.