Perhaps you should try some spelling variations:
doanh vang » doanh van, doanh sang, doanh quang
vang cua » mang cua, hang cua, tang cua
thuc xay » thuc day, thuat xay, truoc xay
tu sach » thu sach, su sach, te sach
tuc xay » tuc xa, tu xay, tac xay
cua tre » cua te, cuu tre, cua triet
tuc vay » tuc va, tu vay, thuc vat
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang

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