Perhaps you should try some spelling variations:
tin khong » tinh khong, tien khong, thinh khong
thuc cach » thuoc sach, truoc cach, thuc hanh
thu sach » tu sach, thuat sach, thuoc sach
sach tin » sach tien, sach kinh, sach tren
cong may » cong xay, cong hay, cong my
cach va » cach van, sach va, cach ta
va phan » van phan, va phat, va phap
cong ma » cuong ma, cong ha, cong va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach tin khong chuyen đe ky thuat: kien thuc cach va phan ((cong may) or (cong ma)) minh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tin khong chuyen đe ky thuat: kien thuc cach va phan ((cong may) OR (cong ma)) minh.
• Adding a wildcard symbol may retrieve word variants: thu sach tin khong chuyen đe ky thuat: kien thuc cach va phan ((cong may) or (cong ma)) minh*.