Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
te sach » toc sach
cac duc » cac du, cao duc, cac dac
dai cuu » dai cua, dai huu
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
ma hoi » xa hoi, ma hoa, me hoi
ve cac » va cac, vien cac

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 y nang ((ma hoi) OR (mai hoi)). hieu ve cac duc ((va thanh) OR (va tinh)) dai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((ma hoi) or (mai hoi)). hieu ve cac duc ((va thanh) OR (va tinh)) dai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) or (mai hoi)). hieu ve cac duc ((va thanh) OR (va tinh)) dai cuu tre*.