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
sach ty » sach y, sach tu, sach thu
cua tre » cuu tre, cua triet, dua tren
xuc ban » duc ban, cuc ban, quoc ban
lam xuc » cam xuc, lam duoc
ty nang » ky nang, ty xang, ty hang
va lam » van lam, va lap
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. lieu va lam xuc ban doanh vi ((((cua tre) OR (cua te))) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang o hoi. lieu va lam xuc ban doanh vi ((((cua tre) OR (cua te))) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang o hoi. lieu va lam xuc ban doanh vi ((((cua tre) OR (cua te))) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang o hoi. lieu va lam xuc ban doanh vi ((((cua tre) OR (cua te))) or (cua tu))*.