Perhaps you should try some spelling variations:
thanh vi » thanh va, thanh ve, nhanh vi
dang xay » dang van, van xay
vu sach » vu bach, su sach, vu khach
van lam » van nam
cuu tre » cua tre, cau tren, cau treo
sach tu » sach thu, cach tu, sach ty
van cau » van dau, van hau, van chat
xay hoi » xa hoi, tay hoi, cay phoi
tu dang » thu dang, tu dong, su dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach tu dang xay hoi. hieu ((van cau) or (van lam)) duc va ((thanh vi) OR (hanh vi)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach tu dang xay hoi. hieu ((van cau) OR (van lam)) duc va ((thanh vi) OR (hanh vi)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach tu dang xay hoi. hieu ((van cau) or (van lam)) duc va ((thanh vi) OR (hanh vi)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: vu sach tu dang xay hoi. hieu ((van cau) or (van lam)) duc va ((thanh vi) OR (hanh vi)) cuu tre*.