Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach song » sach dung
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
than cong » thuan cong, phan cong, thai cong
song hoc » dong hoc, song ho, song hong
tu sach » thu sach, su sach, te sach
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 song hoc chuyen đe ky thuat: kien thuc cach khoa ((than cong) OR (thanh cong)) may tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach song hoc chuyen đe ky thuat: kien thuc cach khoa ((than cong) OR (thanh cong)) may tinh".
• Adding a wildcard symbol may retrieve word variants: tu sach song hoc chuyen đe ky thuat: kien thuc cach khoa ((than cong) OR (thanh cong)) may tinh*.