Perhaps you should try some spelling variations:
thanh dao » thanh dat, thanh dam, thanh do
va thanh » gia thanh, ban thanh, va tinh
cua tre » cuu tre, cua triet, dua tren
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
sach v » sach va, sach 2, sach vay
ve cam » ve cham, ve cac, va cam
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hai » co hai, so hai, o lai

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 v) or (sach y)) nang o hai. hieu ve cam duc va thanh dao ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach v) OR (sach y)) nang o hai. hieu ve cam duc va thanh dao ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach v) or (sach y)) nang o hai. hieu ve cam duc va thanh dao ((cua tre) or (cua te))*.