Perhaps you should try some spelling variations:
nghien cac » nghiep cach, nghien cuu, nghiep bac
nghiep cay » nghiep chan, nghiep va, nghiep cua
nhanh cong » nhanh chong, thanh cong, nganh cong
hoc nhanh » hoc nganh, hoc phan
cong duoc » cong cuoc, dong duoc, cong duc
toc sach » hoc sach, doc sach, thuoc sach
sach hoc » cach hoc, sach hoi, mach hoc
cong hoc » dong hoc, cong hoa, cong coc
duoc hai » duoc hoi, duc hai, doc hai
nhan dan » phan dau, gian dan, nhan tai
hai hoi » dai hoi, hai moi, hai hai
va nhan » van nhan, ca nhan, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach hoc tap, ((nghien cac) or (nghiep cay)) cong hoc nhanh cong duoc hai hoi va nhan dan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach hoc tap, ((nghien cac) OR (nghiep cay)) cong hoc nhanh cong duoc hai hoi va nhan dan.
• Adding a wildcard symbol may retrieve word variants: toc sach hoc tap, ((nghien cac) or (nghiep cay)) cong hoc nhanh cong duoc hai hoi va nhan dan*.