Perhaps you should try some spelling variations:
"vay khach cha de giai co thong minh" » "vay khach cha de giai co hoang minh", "vay thanh cha de giai co thong minh", "vay khach cha de giai bo thong minh", "vay khach cha de giai co trong minh", "vay khach cha de giai co phong minh", "vay khach cha dan giai co thong minh", "vay khach cha kem giai co thong minh", "vay khach cha de giai cao thong minh", "vay khach cha de gian co thong minh", "vay khach cha de gioi co thong minh", "vay khach cha me giai co thong minh", "vay khach chat deo giai co thong minh", "vay khach cham den giai co thong minh"
"so sach phap ve giao cao thong tin" » "so sach phat ve giao cao thong tin", "so sach nha ve giao cao thong tin", "so sach tham ve giao cao thong tin", "so sach phap ve giao cao thuong tin", "so sach phap ve giao tao thong tin", "so sach phap ve giao cao phong tin", "so sach phap ve giai cao thong tin", "so sach phap ve bao cao thong tin", "so sach phap ve tao cao thong tin", "so sanh phap ve giao cao thong tin", "bo sach phap ve giao cao thong tin", "co sach phap ve giao cao thong tin", "so sach phap va giao cao thong tin", "so sach pha ve giao cao thong tin", "so sach phan ve giao cao thong tin", "so sach phap te giao cao thong tin", "so sach phap viet giao cao thong tin", "so sach phap van giao cao thong tin", "so sach phap ve giao cao thong tinh"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("vay khach cha de giai co thong minh") OR ("so sach phap ve giao cao thong tin"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"vay khach cha de giai co thong minh\") OR (\"so sach phap ve giao cao thong tin\"))".
• Removing quotes may allow a broader search: (( vay khach cha de giai co thong minh ) OR ( so sach phap ve giao cao thong tin )).
• Adding a wildcard symbol may retrieve word variants: (("vay khach cha de giai co thong minh") OR ("so sach phap ve giao cao thong tin"))*.