Perhaps you should try some spelling variations:
voi doanh » tri doanh, hoa doanh, van doanh
von doanh » van doanh, toan doanh, hoa doanh
nang doc » nang luc
nam duoc » nam thuoc, da duoc, dat duoc
tu sach » thu sach, su sach, te sach
doc loi » duc loi
tai cua » thai cua, tai cuc, tri cua
lam xuc » cam xuc, lam duoc
sach ky » sac ky, sach y, sach ty
cua te » cua tu

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 ky nang doc loi. lieu va ((lam xuc) or (nam duoc)) ((von doanh) or (voi doanh)) tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang doc loi. lieu va ((lam xuc) OR (nam duoc)) ((von doanh) OR (voi doanh)) tai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang doc loi. lieu va ((lam xuc) or (nam duoc)) ((von doanh) or (voi doanh)) tai cua te*.