Perhaps you should try some spelling variations:
mang cua » manh cua, dung cua, ban cua
danh vai » danh sai, danh va, doanh van
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
tuc va » thuc va, truc va, duc va
ve cac » va cac, vien cac

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 ((mang cua) or (dang xay)) hoi. hieu ve cac ((tuc va) or (tuc xa)) danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((mang cua) OR (dang xay)) hoi. hieu ve cac ((tuc va) OR (tuc xa)) danh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((mang cua) or (dang xay)) hoi. hieu ve cac ((tuc va) or (tuc xa)) danh vai cua tre*.