Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thu sach » tu sach, thuoc sach, thu hoach
benh day » benh dai, benh cay, benh da
ban benh » san benh, ba benh, ban banh
day cua » dai cua
xuc ban » duc ban, cuc ban, quoc ban
van cam » van nam, van lam, van dam
van cau » van dau, van hau, van chat
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (thuat sach)) ky nang x hoi. hieu ((van cam) OR (van cau)) xuc ban benh day cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) ky nang x hoi. hieu ((van cam) OR (van cau)) xuc ban benh day cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuat sach)) ky nang x hoi. hieu ((van cam) OR (van cau)) xuc ban benh day cua tre*".