Perhaps you should try some spelling variations:
"toc sach pha ve giao cong thong tin" » "toc sach pha ve giao cong thuong tin", "toc sach pha ve giao cong trong tin", "toc sach pha ve giao dong thong tin", "toc sach pha ve gia cong thong tin", "toc sach pha ve giao thong thong tin", "toc sach pha ve cao cong thong tin", "hoc sach pha ve giao cong thong tin", "doc sach pha ve giao cong thong tin", "thuoc sach pha ve giao cong thong tin", "toc sach phap ve giao cong thong tin", "toc sach nha ve giao cong thong tin", "toc cach pha ve giao cong thong tin", "toc sach pha te giao cong thong tin", "toc sach pha viet giao cong thong tin", "toc sach pha van giao cong thong tin", "toc sach phan ve giao cong thong tin"
"so sach phat ve gioi cong khong tien" » "so sach phat ve gioi cong thuong tien", "so sach phat ve gioi trong khong tien", "so sach phat ve gioi cong dong tien", "so sach phat ve gioi cong khong dien", "so sach phat ve gioi cong hong tien", "so sach phat ve gioi cong phuong tien", "so sach nha ve gioi cong khong tien", "so sach tham ve gioi cong khong tien", "so cach pha ve gioi cong khong tien", "so sach phat ve gioi dong khong tien", "so sach phat ve gioi song khong tien", "so sach phat ve nguoi cong khong tien", "so sach phapt ve gioi cong khong tien", "so sach nhat ve gioi cong khong tien", "so cach phat ve gioi cong khong tien", "so sanh phat ve gioi cong khong tien", "bo sach phat ve gioi cong khong tien", "co sach phat ve gioi cong khong tien", "so sach phat vi gioi cong khong tien", "so sach phan ve gioi cong khong tien", "so sach phat ve giai cong khong tien", "so sach phat vien gioi cong khong tien", "so sach phat van gioi cong khong tien"

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: (("toc sach pha ve giao cong thong tin") or ("so sach phat ve gioi cong khong tien"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("toc sach pha ve giao cong thong tin") OR ("so sach phat ve gioi cong khong tien")).
• Removing quotes may allow a broader search: (( toc sach pha ve giao cong thong tin ) or ( so sach phat ve gioi cong khong tien )).
• Adding a wildcard symbol may retrieve word variants: (("toc sach pha ve giao cong thong tin") or ("so sach phat ve gioi cong khong tien"))*.