Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky tang » ky nang, ky dang, kho tang
ve cac » va cac, vien cac
ma hoi » xa hoi, ma hoa, me hoi
cua te » cua tu
du va » dau va, tu va, su va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang ((ma hoi) OR (mai hoi)). hieu ve cac du va thanh hai ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky tang ((ma hoi) OR (mai hoi)). hieu ve cac du va thanh hai ((cua tre) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: te sach ky tang ((ma hoi) OR (mai hoi)). hieu ve cac du va thanh hai ((cua tre) or (cua te))*.