Perhaps you should try some spelling variations:
duong manh » duong van
sach tien » sach tren, sach thieu
va chuyen » van chuyen, cau chuyen, va truyen
cuoc bach » cuoc cach, cuon sach, nuoc sach
dan mang » dan quang, dang dang, dang manh
tu sach » thu sach, su sach, te sach
tien va » dien va, thien van
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 tien va chuyen đe ky thuat: kien ((cuoc bach) or (duong manh)) hoa dan mang may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tien va chuyen đe ky thuat: kien ((cuoc bach) OR (duong manh)) hoa dan mang may tinh.
• Adding a wildcard symbol may retrieve word variants: tu sach tien va chuyen đe ky thuat: kien ((cuoc bach) or (duong manh)) hoa dan mang may tinh*.