Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
lai hoi » dai hoi, lai hoa, lai roi
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sach ky » sach y, sach ty, sach kem
mai hoi » mai khoi, dai hoi, mai doi
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) OR (sac ky)) nang ((mai hoi) or (lai hoi)). hieu ve cam duc va thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang ((mai hoi) OR (lai hoi)). hieu ve cam duc va thanh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang ((mai hoi) or (lai hoi)). hieu ve cam duc va thanh dai cua tre*".