Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, cuoc cach, cuon sach
cau phuc » cau truc, chau phu, huu phuc
hoc sach » hoc sinh, hoc cac, hoc anh
phuc van » thuc van, phuc va, chuc van
cua tre » cua te, cua triet, dua tren
anh dat » thanh dat, lanh dao, dinh dat
van anh » van thanh, tuan anh, van minh
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
nang co » nang cao, nang doc, nang noi
co loi » co hoi
ve cau » ke cau, va cau, ve cac

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) or (hoc sach)) ky nang co loi. hieu ve cau phuc van anh dat ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (hoc sach)) ky nang co loi. hieu ve cau phuc van anh dat ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nuoc sach) or (hoc sach)) ky nang co loi. hieu ve cau phuc van anh dat ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (hoc sach)) ky nang co loi. hieu ve cau phuc van anh dat ((cua tre) OR (cuu tre))*.