Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
hanh dai » hanh tai, hanh dao, vanh dai
chau phu » chau phi, chau au, chau tho
cau phuc » cau truc, huu phuc, van phuc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
ty nang » ky nang, ty hang, ly nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ((ty nang) OR (ty xang)) xa hoi. hieu ve ((cau phuc) or (chau phu)) va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ((ty nang) OR (ty xang)) xa hoi. hieu ve ((cau phuc) OR (chau phu)) va hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ((ty nang) OR (ty xang)) xa hoi. hieu ve ((cau phuc) or (chau phu)) va hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: nuoc sach ((ty nang) OR (ty xang)) xa hoi. hieu ve ((cau phuc) or (chau phu)) va hanh dai cua tre*.