Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
manh cua » doanh cua, ban cua
tu sach » thu sach, su sach, te sach
va chat » van chat, va phat, cao chat
cua tre » cua te, cuu tre, cua triet
va cham » va tham
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
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: tu sach y nang ma hoi. hieu ((va cham) OR (va chat)) xuc ((van ban) or (van thanh)) manh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu ((va cham) OR (va chat)) xuc ((van ban) OR (van thanh)) manh cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ma hoi. hieu ((va cham) OR (va chat)) xuc ((van ban) or (van thanh)) manh cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu ((va cham) OR (va chat)) xuc ((van ban) or (van thanh)) manh cua tre*.