Perhaps you should try some spelling variations:
sach tien » sach thieu
sach tren » sach tranh
va chuyen » van chuyen, cau chuyen, va truyen
kien cuoc » chien cuoc, kien cuong, dien cuc
cach hoan » cac khoan, hach toan, sach han
hoan dan » hoa dan, hoang dang, khoan danh
may minh » may tinh, mai minh, van minh
dan ung » dan dung, dan vung, dang ung
ung may » dung may, cung may, mang may

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) OR (sach tren)) va chuyen đe ky thuat: kien cuoc cach hoan dan ung may minh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tien) OR (sach tren)) va chuyen đe ky thuat: kien cuoc cach hoan dan ung may minh".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tien) OR (sach tren)) va chuyen đe ky thuat: kien cuoc cach hoan dan ung may minh*.