Perhaps you should try some spelling variations:
sach trung » mach trung, sach thuong, sach dung
hoc chuyen » khong chuyen
trung hoc » trung quoc
khoa phan » khoa than, khoa phau, khoan phai
thu sach » tu sach, thuat sach, thuoc sach
thuc anh » thuc hanh, thuy anh, thu anh
hoa phan » hoa dan, co phan
dong may » dong ma, dung may, dong mau
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: thu sach trung hoc chuyen đe ky thuat: kien thuc anh ((khoa phan) OR (hoa phan)) dong may tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach trung hoc chuyen đe ky thuat: kien thuc anh ((khoa phan) OR (hoa phan)) dong may tinh".
• Adding a wildcard symbol may retrieve word variants: thu sach trung hoc chuyen đe ky thuat: kien thuc anh ((khoa phan) OR (hoa phan)) dong may tinh*.