Perhaps you should try some spelling variations:
"te sach pha viet giao cong thong tin" » "te sach pha viet giao cong thuong tin", "te sach pha viet giao cong trong tin", "te sach pha viet giao dong thong tin", "te sach pha viet gia cong thong tin", "te sach pha viet giao thong thong tin", "te sach pha viet cao cong thong tin", "te sach phat viet giao cong thong tin", "te sach phap viet giao cong thong tin", "te sach nha viet giao cong thong tin", "te sach pham viet giao cong thong tin", "te sach phan viet giao cong thong tin", "toc sach pha viet giao cong thong tin"
"so cach phat ve giai con hong tien" » "so cach pha ve giai con hong tien", "so sach phat ve giai con hong tien", "so cac chat ve giai con hong tien", "so cach phat ve giai con dong tien", "so cach phat ve giai con tong tien", "so cach phat ve giai con hang tien", "so cach phat ve gian con hong tien", "so cach phat ve giai doan hong tien", "so cach phat ve gia cong hong tien", "so cach phat ve giai con song tien", "so cach phat ve giai cong khong tien", "so cach phat ve giai cong cong tien", "co cach phat ve giai con hong tien", "loi cach phat ve giai con hong tien", "so cach nhat ve giai con hong tien", "so cach phat vi giai con hong tien", "so cach phat va giai con hong tien", "so cach phat ve giao con hong tien", "so cach phat de giai con hong 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: (("te sach pha viet giao cong thong tin") or ("so cach phat ve giai con hong tien"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("te sach pha viet giao cong thong tin") OR ("so cach phat ve giai con hong tien")).
• Removing quotes may allow a broader search: (( te sach pha viet giao cong thong tin ) or ( so cach phat ve giai con hong tien )).
• Adding a wildcard symbol may retrieve word variants: (("te sach pha viet giao cong thong tin") or ("so cach phat ve giai con hong tien"))*.