Perhaps you should try some spelling variations:
sach trung » mach trung, sach thuong, sach dung
hoc chuyen » khong chuyen
bien thuoc » bien thuc, trien thuoc, kien thuc
thuoc bach » thuoc sach, thuoc ban, truc bach
trung hoc » trung quoc
phan dang » phan dau, phan cong, nhan dan
bach hoa » bach khoa, bach ha, cach hoan
hoa phan » hoa dan, co phan
dang may » mang may, dang xay, dung may
su sach » so sach, vu sach
tinh » trinh, minh, kinh

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 trung hoc chuyen đe ky thuat: bien thuoc bach hoa phan dang may (tinh or dinh)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach trung hoc chuyen đe ky thuat: bien thuoc bach hoa phan dang may (tinh OR dinh).
• Adding a wildcard symbol may retrieve word variants: su sach trung hoc chuyen đe ky thuat: bien thuoc bach hoa phan dang may (tinh or dinh)*.