Perhaps you should try some spelling variations:
doanh thong » doanh thuong, doanh tong, doanh trong
hoa doanh » toan doanh, hoa dan
thong hoc » thuong hoc, tuong hoc, thong hoa
toc sach » hoc sach, doc sach, thuoc sach
cuu cong » cua cong, thu cong, cac cong
cong hoa » dong hoa, dong hoc, hang hoa
nhan tao » nhan tai, nhan dan
tu sach » thu sach, su sach, te sach
va nhan » van nhan, ca nhan, va phan
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) or (toc sach)) hoc tap, nghien cuu cong hoa doanh thong hoc xa hoi va nhan tao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) hoc tap, nghien cuu cong hoa doanh thong hoc xa hoi va nhan tao.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) hoc tap, nghien cuu cong hoa doanh thong hoc xa hoi va nhan tao*.