Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
hieu van » hieu va, thien van, lieu va
doanh vi » doanh va, doan vi, doanh vien
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
van lam » van nam
lam xuc » cam xuc, lam duoc
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
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 o hoi. hieu van lam xuc 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 o hoi. hieu van lam xuc ban doanh vi ((cua tre) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang o hoi. hieu van lam xuc ban doanh vi ((cua tre) or (cua tu))*.