Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
chat cuc » chat cua, chat xuc, chi cuc
va chat » van chat, va phat, cao chat
cuc ban » cua ban, cac ban, cuu ban
ban anh » ban hanh, ban banh, ban danh
cua tre » cua te, cuu tre, cua triet
co hoi » co hoc, co loi
o hoi » o hoc, o hai, o hoa
d cua » de cua, do cua, da cua

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) or (toc sach)) ky nang ((o hoi) OR (co hoi)). lieu va chat cuc ban anh d cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang ((o hoi) OR (co hoi)). lieu va chat cuc ban anh d cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky nang ((o hoi) OR (co hoi)). lieu va chat cuc ban anh d cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky nang ((o hoi) OR (co hoi)). lieu va chat cuc ban anh d cua tre*.