Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
cach hoan » cac khoan, hach toan, sach han
phan dung » phan ung, phan dang, chan dung
kinh hoc » sinh hoc, hinh hoc, tinh hoc
bach hoa » bach khoa, bach ha, hoach hoa
tai tinh » thai tinh, tai dinh, tai sinh
su sach » so sach, vu sach

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 kinh hoc chuyen đe ky thuat: kien thuc ((bach hoa) OR (cach hoan)) phan dung tai tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach kinh hoc chuyen đe ky thuat: kien thuc ((bach hoa) OR (cach hoan)) phan dung tai tinh".
• Adding a wildcard symbol may retrieve word variants: su sach kinh hoc chuyen đe ky thuat: kien thuc ((bach hoa) OR (cach hoan)) phan dung tai tinh*.