Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach song » sach dung
thuc cach » thuoc sach, truoc cach, thuc hanh
khoa than » hoa thai, hoa tan, kho khan
thong may » thong xay, thong mang, thong va
song hoc » dong hoc, song ho, song hong
su sach » so sach, vu 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: su sach song hoc chuyen đe ky thuat: kien thuc cach ((khoa than) OR (khoa luan)) thong may tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach song hoc chuyen đe ky thuat: kien thuc cach ((khoa than) OR (khoa luan)) thong may tinh".
• Adding a wildcard symbol may retrieve word variants: su sach song hoc chuyen đe ky thuat: kien thuc cach ((khoa than) OR (khoa luan)) thong may tinh*.