Perhaps you should try some spelling variations:
doanh khoa » toan khoa
thanh van » thanh san, thanh toan, thanh phan
thai vung » thai cong, thai van
hoa doanh » toan doanh, hoa dan
sach hoi » sach doi, sach moi, cach thoi
thu sach » tu sach, thuat sach, thuoc sach
cong hoa » dong hoa, dong hoc, hang hoa
cuu cong » cua cong, thu cong, cac cong
khoa hoc » hoa hoc
thi van » thi lan, thi hanh, thi nang
hoi tap » hoi dap, hoc tap, hoi tai
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: thu sach hoi tap, nghien cuu cong hoa doanh khoa hoc xa ((thai vung) or (thi van)) thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach hoi tap, nghien cuu cong hoa doanh khoa hoc xa ((thai vung) OR (thi van)) thanh van.
• Adding a wildcard symbol may retrieve word variants: thu sach hoi tap, nghien cuu cong hoa doanh khoa hoc xa ((thai vung) or (thi van)) thanh van*.