Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
nhanh thong » nhanh chong, nhanh thang, nhan thong
hoc nhanh » hoc nganh, hoc phan
hai doanh » lai doanh, nhap doanh, trai doanh
thanh van » thanh san, thanh toan, thanh phan
thu sach » tu sach, thuat sach, thuoc sach
sach doi » sach hoi, sach moi, sach dao
cuu cong » cua cong, thu cong, cac cong
cong hoc » dong hoc, cong hoa, cong coc
doi tap » doi tac, doi dap, doi tai

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 doi tap, nghien cuu cong hoc nhanh thong ((hoc xa) OR (hoc ma)) hai doanh thanh van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach doi tap, nghien cuu cong hoc nhanh thong ((hoc xa) OR (hoc ma)) hai doanh thanh van".
• Adding a wildcard symbol may retrieve word variants: thu sach doi tap, nghien cuu cong hoc nhanh thong ((hoc xa) OR (hoc ma)) hai doanh thanh van*.