Perhaps you should try some spelling variations:
nhanh thong » nhanh chong, nhanh thang, nhan thong
thong hoc » thuong hoc, tuong hoc, thong hoa
hai doanh » lai doanh, nhap doanh, trai doanh
sach hoi » sach doi, sach moi, cach thoi
cong hoc » cong hoa, cong coc, cong ho
dong hoc » dong co, dong luc
nhan van » nhan dan, nhan va, phan van
tu sach » thu sach, su sach, te sach
hoi tap » hoi dap, hoc tap, hoi tai
ma hai » ta hai, va hai, xa hai

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

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