Perhaps you should try some spelling variations:
van thanh » ban thanh
van tuan » van quan, anh tuan
manh cua » doanh cua, ban cua
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
va cao » va cac, va co, va dao

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 y nang ma hoi. hieu va cao xuc ((van ban) or (((van thanh) or (van tuan)))) manh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu va cao xuc ((van ban) OR (((van thanh) OR (van tuan)))) manh cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu va cao xuc ((van ban) or (((van thanh) or (van tuan)))) manh cua tre*.