Perhaps you should try some spelling variations:
va thanh » ban thanh, va tinh, le thanh
te sach » toc sach
hai cuu » hai cua, hai chu, hai cuc
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach ty
lai hoi » dai hoi, lai hoa, lai roi
mai hoi » mai khoi, dai hoi, mai doi
ly nang » ky nang, ly hang, ly vang
cuu tre » cua tre, cau tren, cau treo
va cam » va cham, va cac, va cao

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