Perhaps you should try some spelling variations:
doanh vien » doanh tien, doanh chien, thanh vien
duc toan » duc tan, duc ton, duc hoan
lam duc » lam duoc, pham duc, nam duoc
cua tre » cua te, cuu tre, cua triet
tu sach » thu sach, te sach, tu cach
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
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) or (su sach)) ty nang o hoi. lieu va lam duc toan doanh vien ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang o hoi. lieu va lam duc toan doanh vien ((cua tre) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty nang o hoi. lieu va lam duc toan doanh vien ((cua tre) or (cua tu))*.