Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
thuc bach » truc bach, thuc cach, thuoc sach
duong may » duong ma, dung may, duong mat
kinh hoc » sinh hoc, hinh hoc, tinh hoc
hoa phan » hoa dan
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 kinh hoc chuyen đe ky thuat: kien thuc bach ((hoa phan) OR (co phan)) duong may tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach kinh hoc chuyen đe ky thuat: kien thuc bach ((hoa phan) OR (co phan)) duong may tinh".
• Adding a wildcard symbol may retrieve word variants: tu sach kinh hoc chuyen đe ky thuat: kien thuc bach ((hoa phan) OR (co phan)) duong may tinh*.