Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
va doanh » van doanh, va danh, hoa doanh
sach ky » sac ky, sach y, sach ty
van cua » vang cua, ban cua, dan cua
tu sach » thu sach, su sach, te sach
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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 xa hoi. hieu ((ve cham) or (vu cham)) tuc ((va doanh) OR (vay doanh)) van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ((ve cham) OR (vu cham)) tuc ((va doanh) OR (vay doanh)) van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ((ve cham) or (vu cham)) tuc ((va doanh) OR (vay doanh)) van cua tre*".