Perhaps you should try some spelling variations:
nghien huu » nghien cuu, nguyen huu, nhiem huu
doanh khoa » toan khoa
thanh van » thanh san, thanh toan, thanh phan
ban thanh » ban hanh, ban hang
sach moi » sach doi, sach hoi, bach mai
anh khoa » hang khoa
mot cach » loi cach
huu mot » cuu mot, huy mot, hieu mot
hoi ban » hoi dan, hoi bai, doi ban
moi dan » moi dang, hoi dan, doi dan
tu sach » thu sach, su sach, te sach
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach moi dan, nghien huu mot cach ((anh khoa) or (doanh khoa)) hoc xa hoi ban thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach moi dan, nghien huu mot cach ((anh khoa) OR (doanh khoa)) hoc xa hoi ban thanh van.
• Adding a wildcard symbol may retrieve word variants: tu sach moi dan, nghien huu mot cach ((anh khoa) or (doanh khoa)) hoc xa hoi ban thanh van*.