Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
nganh nang » nganh nong, ganh nang, ngan hang
hoa nganh » hoc nganh, khoi nganh, hoa doanh
chau phan » cau phan, chau nhan, chau phong
phan van » pham van, thanh van, luan van
hoi chau » hoi chu, hoi cham, hai chau
sach hoi » sach doi, sach moi, cach thoi
nang hoc » nang doc, nang luc, dong hoc
cach hoc » cach thuc, cach thoi, dich hoc
so hoa » do hoa, so ha
hoc xa » hoc ma
huu so » huu son, huu co, huu ho

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 hoc) or (sach hoi)) tap, nghien huu so hoa nganh nang hoc xa hoi chau phan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cach hoc) OR (sach hoi)) tap, nghien huu so hoa nganh nang hoc xa hoi chau phan van.
• Adding a wildcard symbol may retrieve word variants: tu ((cach hoc) or (sach hoi)) tap, nghien huu so hoa nganh nang hoc xa hoi chau phan van*.