Perhaps you should try some spelling variations:
va thanh » ban thanh, va tinh, le thanh
te sach » toc sach
va cham » va chat, va tham
hai cuu » hai cua, hai chu, hai cuc
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
va cam » va cac, va cao, va cai
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ma hoi. hieu ((va cam) OR (va cham)) tu ((va thanh) or (gia thanh)) hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu ((va cam) OR (va cham)) tu ((va thanh) OR (gia thanh)) hai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. hieu ((va cam) OR (va cham)) tu ((va thanh) or (gia thanh)) hai cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ma hoi. hieu ((va cam) OR (va cham)) tu ((va thanh) or (gia thanh)) hai cuu tre*.