Perhaps you should try some spelling variations:
"tu cach pha me giai con thong minh" » "tu cach pha me giai con thong tin", "tu cach pha me giai con hoang minh", "tu cach pha me giai cong thong minh", "tu cach pha me giai con hong minh", "tu cach pha me giai cong thuong minh", "tu cach pha me gian con thong minh", "tu cach pha me giai doan thong minh", "tu cach pha me giao cong thong minh", "tu cac pha me giai con thong minh", "tu cach pha de giai con thong minh", "tu cach pha ve giai con thong minh", "tu cach pha ke giai con thong minh", "tu cach cha me giai con thong minh", "tu cach pham men giai con thong minh"
"su sach phan mem gioi co trong tin" » "su sach han mem gioi co trong tin", "su mach phan mem gioi co trong tin", "su sach phat mem gioi co trong tin", "su sach phan mem gioi co thong tin", "su sach phan mem gioi co trong tan", "su sach phan mem gioi co trong tieng", "su sach phan kem giai co trong tin", "su sach phan moi gioi co trong tin", "su sach phan tam gioi co trong tin", "su sach phan mem gioi ro trong tin", "su sach phan mem gioi cong trong tin", "su sach phan mem gioi cay trong tin", "so sach phan mem gioi co trong tin", "vu sach phan mem gioi co trong tin", "su sach phan mem nguoi co trong 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: (("su sach phan mem gioi co trong tin") or ("tu cach pha me giai con thong minh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("su sach phan mem gioi co trong tin") OR ("tu cach pha me giai con thong minh")).
• Removing quotes may allow a broader search: (( su sach phan mem gioi co trong tin ) or ( tu cach pha me giai con thong minh )).
• Adding a wildcard symbol may retrieve word variants: (("su sach phan mem gioi co trong tin") or ("tu cach pha me giai con thong minh"))*.