Perhaps you should try some spelling variations:
"su sach cha te giao cong thong tin" » "su sach cha te giao cong thuong tin", "su sach cha te giao cong trong tin", "su sach cha te giao dong thong tin", "su sach cha te gia cong thong tin", "su sach cha te giao thong thong tin", "su sach cha te cao cong thong tin", "su sach che te giao cong thong tin", "su sach ha te giao cong thong tin", "su sach cua te giao cong thong tin", "so sach cha te giao cong thong tin", "vu sach cha te giao cong thong tin", "su sach cha ton giao cong thong tin", "su sach cha me giao cong thong tin"
"tu sach nha vien gioi thong thong tin" » "tu sach nha vien gioi trong thong tin", "tu sach nha vien nguoi thong thong tin", "tu sach nha vien giao thong thong tin", "tu sach nhan vien gioi thong thong tin", "tu sach nha viec gioi thong thong tin", "tu sach nhan dien gioi thong thong tin", "thu sach nha vien gioi thong thong tin", "te sach nha vien gioi thong thong tin", "tu cach nha vien gioi thong 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 nha vien gioi thong thong tin") or ("su sach cha te giao cong thong tin"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("tu sach nha vien gioi thong thong tin") OR ("su sach cha te giao cong thong tin")).
• Removing quotes may allow a broader search: (( tu sach nha vien gioi thong thong tin ) or ( su sach cha te giao cong thong tin )).
• Adding a wildcard symbol may retrieve word variants: (("tu sach nha vien gioi thong thong tin") or ("su sach cha te giao cong thong tin"))*.