Perhaps you should try some spelling variations:
hoa doanh » toan doanh, hoa dan
thu sach » thuat sach, thuoc sach, thu hoach
hoc phan » hoc dan, hoc pho
phan hoa » phan loai, phan phoi, phan hong
nhan van » nhan dan, nhan va, phan van
tu sach » su sach, te sach, tu cach
cuu mot » cua mot, cuu mo, huu mot
mot hoc » mon hoc, mo hoc, mot goc
hoc xa » hoc ma
xa hoa » xa khoa, xa hoi, ma hoa

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) or (thu sach)) hoc tap, nghien cuu mot hoc phan hoa hoc xa hoa doanh nhan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) hoc tap, nghien cuu mot hoc phan hoa hoc xa hoa doanh nhan van*.