Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
doanh vi » doanh va, doan vi, doanh vien
tu sach » thu sach, su sach, te sach
duc ban » duc tan, duc van, dua ban
ty nang » ky nang, ty xang, ly nang
cua tre » cua te, cuu tre, cua triet
ty hang » ly hang, ty xang, thi hang
lam duc » lam duoc, pham duc, nam duoc
va lam » van lam, va lap
cua tu » cua tuc, cua su, cua cu
o hoi » co hoi, o hoc, o hai

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 ((ty nang) or (ty hang)) o hoi. lieu va lam duc ban doanh vi ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty hang)) o hoi. lieu va lam duc ban doanh vi ((cua tre) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty hang)) o hoi. lieu va lam duc ban doanh vi ((cua tre) or (cua tu))*.