Perhaps you should try some spelling variations:
khoa thanh » khoan thanh, khoa than, hoa thanh
sach tren » sach tien, sach tranh
thuc bach » truc bach, thuc cach, thuoc sach
bach khoa » anh khoa
sach tin » sach tien, sach kinh, sach han
cong may » cong xay, cong ma, cong hay
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach tin) OR (sach tren)) khong chuyen đe ky thuat: kien thuc bach khoa thanh cong may tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tin) OR (sach tren)) khong chuyen đe ky thuat: kien thuc bach khoa thanh cong may tinh".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tin) OR (sach tren)) khong chuyen đe ky thuat: kien thuc bach khoa thanh cong may tinh*.