Perhaps you should try some spelling variations:
"thu sach ngang ve giai doan hong minh" » "thu sach nang ve giai doan hong minh", "thu sach ngan ve giai doan hong minh", "thu sach ngon ve giai doan hong minh", "thu sach ngang ve giai doan huong minh", "thu sach ngang ve giai doan hung minh", "thu sach ngang ve giai doan phuong minh", "thu sach ngang ve giai doan hoang minh", "thu sach ngang ve giai doan thong minh", "thu sach ngang ve giai doan khong minh", "tu sach ngang ve giai doan hong minh", "thuat sach ngang ve giai doan hong minh", "thuoc sach ngang ve giai doan hong minh", "thu sach ngang _ giai doan hong minh", "thu sach dang ve giai doan hong minh", "thu sach ngang va giai doan hong minh", "thu sach ngang ve giao doan hong minh", "thu sach ngang de giai doan hong minh"
"su sach han dan giai cong trong tin" » "su sach han dan giai cong thuong tin", "su sach han dan giai duong trong tin", "su sach han dan giai cong trinh tin", "su sach han dan gia cong trong tin", "su sach han dan giao cong trong tin", "su sach han dan giai phong trong tin", "su sach han dan giai cong thong tin", "su sach han dan giai cong trong tan", "su sach han dan giai cong trong tieng", "su sach tham dan giai cong trong tin", "su sach danh dan giai cong trong tin", "su sach nang dan giai cong trong tin", "su sach han dan gian cong trong tin", "su sach han luan giai cong trong tin", "su sach han va giai cong trong tin", "so sach han dan giai cong trong tin", "vu sach han dan giai cong trong tin", "su sach nhan dan giai cong trong tin", "su sach han danh giai cong trong tin", "su sach shan dan giai cong 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: (("thu sach ngang ve giai doan hong minh") or ("su sach han dan giai cong trong tin"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("thu sach ngang ve giai doan hong minh") OR ("su sach han dan giai cong trong tin")).
• Removing quotes may allow a broader search: (( thu sach ngang ve giai doan hong minh ) or ( su sach han dan giai cong trong tin )).
• Adding a wildcard symbol may retrieve word variants: (("thu sach ngang ve giai doan hong minh") or ("su sach han dan giai cong trong tin"))*.