Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
doanh ca » doanh cua, doanh cao, doanh va
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty hang, ly nang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
cham lo » cham o, cam lo, cham soc
cua tre » cua te, cuu tre, cua triet
lo vay » lo van, lo va
ca cua » co cua

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 ((ty nang) or (ty xang)) xa hoi. hieu ve cham lo vay doanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty xang)) xa hoi. hieu ve cham lo vay doanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty xang)) xa hoi. hieu ve cham lo vay doanh ca cua tre*.