Perhaps you should try some spelling variations:
dang xay » dang van, van xay
thanh vi » thanh va, thanh ve, nhanh vi
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
xay hoi » xa hoi, tay hoi, cay phoi
y dang » ky dang, 2 dang, _ dang
va cai » va cac, va bai, va dai
luc va » duc va, tuc va, loc va
va cao » va cac, va co, va dao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y dang xay hoi. hieu ((va cai) or (va cao)) luc va ((thanh vi) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y dang xay hoi. hieu ((va cai) OR (va cao)) luc va ((thanh vi) OR (hanh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y dang xay hoi. hieu ((va cai) or (va cao)) luc va ((thanh vi) or (hanh vi)) cua tre*.