Perhaps you should try some spelling variations:
"so sach cha ve gian cong trong ca" » "so sach cha ve gian cong thuong ca", "so sach cha ve gian duong trong ca", "so sach cha ve gian cong trinh ca", "so sach cha ve gia cong trong ca", "so sach cha ve giao cong trong ca", "so sach cha ve gian song trong ca", "so sach nha ve gian cong trong ca", "so sach che ve gian cong trong ca", "so sach ha ve gian cong trong ca", "so sach cha ve gian cong trong cac", "so sach cha ve gian cong trong nha", "so sanh cha ve gian cong trong ca", "bo sach cha ve gian cong trong ca", "co sach cha ve gian cong trong ca", "so sach cha va gian cong trong ca", "so sach cha ve giai cong trong ca", "so sach ca ve gian cong trong ca", "so sach pha ve gian cong trong ca"
"tu sach cha me giai co thong tin" » "tu sach nha me giai co thong tin", "tu sach che me giai co thong tin", "tu sach ha me giai co thong tin", "tu sach cha me giai bo thong tin", "tu sach cha me giai co trong tin", "tu sach cha me giai co phong tin", "thu sach cha me giai co thong tin", "su sach cha me giai co thong tin", "te sach cha me giai co thong tin", "tu sach cha de giai co thong tin", "tu sach cha ve giai co thong tin", "tu sach cha ke giai co thong tin", "tu sach cha me giai cao thong tin", "tu sach cha me gian co thong tin", "tu sach cha me gioi co thong tin"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("tu sach cha me giai co thong tin") or ("so sach cha ve gian cong trong ca"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tu sach cha me giai co thong tin") OR ("so sach cha ve gian cong trong ca")).
• Removing quotes may allow a broader search: (( tu sach cha me giai co thong tin ) or ( so sach cha ve gian cong trong ca )).
• Adding a wildcard symbol may retrieve word variants: (("tu sach cha me giai co thong tin") or ("so sach cha ve gian cong trong ca"))*.