Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
ban hanh » ban hang
pham cuc » pham chuc, pham duc, pham cua
tu sach » thu sach, su sach, te sach
cam cuc » cam xuc, cham cuu
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
co loi » co hoi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((co loi) OR (cau hoi)). hieu ve ((cam cuc) OR (pham cuc)) ban hanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((co loi) or (cau hoi)). hieu ve ((cam cuc) OR (pham cuc)) ban hanh dai cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((co loi) or (cau hoi)). hieu ve ((cam cuc) OR (pham cuc)) ban hanh dai cua tre*.