Perhaps you should try some spelling variations:
"te sach xa ve cao cong thong minh" » "te sach xa ve cao cong hoang minh", "te sach xa ve cao cong thuong minh", "te sach xa ve cao cong trong minh", "te sach xa ve cao dong thong minh", "te sach xa ve cac cong thong minh", "te sach xa ve cao dang thong minh", "te sach xa ve cua cong thong minh", "toc sach xa ve cao cong thong minh", "te sach dao ve cao cong thong minh", "te sach nha ve cao cong thong minh", "te sach bai ve cao cong thong minh", "te sach xa va cao cong thong minh", "te sach xa ve bao cong thong minh", "te sach ca ve cao cong thong minh", "te sach va ve cao cong thong minh", "te sach la ve cao cong thong minh"
"hoc sach han me gioi cong thong tin" » "hoc sach han me gioi cong thuong tin", "hoc sach han me gioi cong trong tin", "hoc sach han me gioi dong thong tin", "hoc sach han me gioi song thong tin", "hoc sach han me nguoi cong thong tin", "hoc sinh han me gioi cong thong tin", "hoc cac han me gioi cong thong tin", "hoc anh han me gioi cong thong tin", "hoc sach tham me gioi cong thong tin", "hoc sach danh me gioi cong thong tin", "hoc sach nang me gioi cong thong tin", "hoc sach han me giai cong thong tin", "hoc sach han ve gioi cong thong tin", "hoc sach phan mem gioi cong thong tin", "hoc sach han me gioi cong thong tinh"

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 xa ve cao cong thong minh") or ("hoc sach han me gioi cong thong tin"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("te sach xa ve cao cong thong minh") OR ("hoc sach han me gioi cong thong tin")).
• Removing quotes may allow a broader search: (( te sach xa ve cao cong thong minh ) or ( hoc sach han me gioi cong thong tin )).
• Adding a wildcard symbol may retrieve word variants: (("te sach xa ve cao cong thong minh") or ("hoc sach han me gioi cong thong tin"))*.