Perhaps you should try some spelling variations:
doanh tien » doanh tren, doanh vien, doanh chien
van doanh » toan doanh, van dong, van thanh
tu sach » thu sach, te sach, tu cach
xuc van » duc van, luc van, vuc van
cuu tre » cua tre, cau tren, cau treo
su sach » so sach, vu sach
ty nang » ky nang, ty xang, ty hang
lam xuc » cam xuc, lam duoc
va lam » van lam, va lap
nang o » nang co, nang ho, nang ro
cua su » qua su
o hoc » co hoc, mo hoc, so hoc

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 hoc. lieu va lam xuc van doanh tien ((cuu tre) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang o hoc. lieu va lam xuc van doanh tien ((cuu tre) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty nang o hoc. lieu va lam xuc van doanh tien ((cuu tre) or (cua su))*.