Perhaps you should try some spelling variations:
"te sach ha ve giai toan thong minh" » "te sach ha ve giai toan thong tin", "te sach ha ve giai doan thong minh", "te sach ha ve giai toa thong minh", "te sach ha ve gioi toan thong minh", "toc sach ha ve giai toan thong minh", "te sach nha ve giai toan thong minh", "te sach han ve giai toan thong minh", "te bach ha ve giai toan thong minh", "te sach ha va giai toan thong minh", "te sach ha ve giao toan thong minh", "te sach ha de giai toan thong minh", "te sach pha ve giai toan thong minh", "te sach hua ve giai toan thong minh", "te sach ca ve giai toan thong minh"
"te sach xa moi nguoi ho hoang minh" » "te sach xa con nguoi ho hoang minh", "te sach xa toc nguoi ho hoang minh", "te sach xa hoa nguoi ho hoang minh", "te sach xa moi nguoi cho hoang minh", "te sach xa moi nguoi kho hoang minh", "te sach xa moi nguoi tho hoang minh", "te sach xa moi nguoi co hoang minh", "te sach xa moi nguoi do hoang minh", "te sach xa moi nguoi hoan hoang minh", "toc sach xa moi nguoi ho hoang minh", "te sach dao moi nguoi ho hoang minh", "te sach nha moi nguoi ho hoang minh", "te sach bai moi nguoi ho hoang minh", "te sach xa hoi nguoi ho hoang minh", "te sach va moi nguoi ho hoang minh", "te sach ma moi nguoi ho hoang minh"

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 ha ve giai toan thong minh") or ("te sach xa moi nguoi ho hoang minh"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("te sach ha ve giai toan thong minh") OR ("te sach xa moi nguoi ho hoang minh")).
• Removing quotes may allow a broader search: (( te sach ha ve giai toan thong minh ) or ( te sach xa moi nguoi ho hoang minh )).
• Adding a wildcard symbol may retrieve word variants: (("te sach ha ve giai toan thong minh") or ("te sach xa moi nguoi ho hoang minh"))*.