Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
phan lap » phan dau
te sach » toc sach
cao duc » dao duc, cao suc, giao duc
cua tre » cua te, cuu tre, cua triet
cam duc » cam xuc, pham duc, nam duoc
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
y tang » ky tang, 6 tang, 7 tang
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 tang ma hoi. hieu ve ((cam duc) or (cao duc)) ban ((thanh lai) or (phan lap)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang ma hoi. hieu ve ((cam duc) OR (cao duc)) ban ((thanh lai) OR (phan lap)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y tang ma hoi. hieu ve ((cam duc) or (cao duc)) ban ((thanh lai) or (phan lap)) cua tre*.