Perhaps you should try some spelling variations:
nghien cua » nghien cuu, nghiep vua, nghe cua
nghiep cua » nghiep vua, nghiep luan, nghien cuu
dich hoc » sinh hoc, hinh hoc, tinh hoc
cong hoc » dong hoc, cong hoa, cong coc
hoc hanh » hoc nhanh, hoc thanh, hoc anh
hanh hoa » thanh hoa, khanh hoa, hang hoa
nhan tai » hang tai, van tai, toan tai
te dich » ve dich, tam dich, tap dich
hoc xa » hoc ma
hoi ca » hoi cua, hoi cac, hoi cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te dich hoc tap, ((nghien cua) or (nghiep cua)) cong hoc hanh hoa hoc xa hoi ca nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te dich hoc tap, ((nghien cua) OR (nghiep cua)) cong hoc hanh hoa hoc xa hoi ca nhan tai.
• Adding a wildcard symbol may retrieve word variants: te dich hoc tap, ((nghien cua) or (nghiep cua)) cong hoc hanh hoa hoc xa hoi ca nhan tai*.