Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
thanh lai » thanh hai, thanh loi, thanh tai
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
cam duc » cao duc, pham duc, nam duoc
nang ma » tang ma, sang ma, nang cao
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 ky nang ma hoi. hieu van ((cam duc) OR (cam xuc)) ban ((thanh lai) or (thanh lap)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu van ((cam duc) OR (cam xuc)) ban ((thanh lai) OR (thanh lap)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. hieu van ((cam duc) OR (cam xuc)) ban ((thanh lai) or (thanh lap)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu van ((cam duc) OR (cam xuc)) ban ((thanh lai) or (thanh lap)) cua tre*.