Perhaps you should try some spelling variations:
ban thanh » ban hang
cham duc » pham duc, cham soc, pham duy
ban hanh » ban hang
cua tre » cua te, cua triet, dua tren
vu sach » vu bach, su sach, vu khach
va cham » va chat, va tham
nang ma » tang ma, sang ma, nang cao
cuu tre » cau tren, cau treo
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: vu sach y nang ma hoi. lieu va cham duc ((ban thanh) or (ban hanh)) vai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y nang ma hoi. lieu va cham duc ((ban thanh) OR (ban hanh)) vai ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang ma hoi. lieu va cham duc ((ban thanh) or (ban hanh)) vai ((cua tre) OR (cuu tre))*".