Perhaps you should try some spelling variations:
ban doan » ban doanh, ban dan, ban soan
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
cua tre » cuu tre, cua triet, dua tren
doan vi » doan va, don vi, doan thi
xuc ban » duc ban, cuc ban, quoc ban
lam xuc » cam xuc, lam duoc
tu nang » tru nang, tu nong, tu nano
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 tu nang o hoi. lieu va lam xuc ban doan vi ((((cua tre) or (cua te))) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang o hoi. lieu va lam xuc ban doan vi ((((cua tre) OR (cua te))) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang o hoi. lieu va lam xuc ban doan vi ((((cua tre) or (cua te))) or (cua tu))*.