Perhaps you should try some spelling variations:
trien thuong » trien phuong, tin thuong, dien thuong
kien thuoc » kien thuc, bien thuoc, trien thuoc
sach tien » sach tren, sach thieu
va chuyen » van chuyen, cau chuyen, va truyen
bach khoa » anh khoa
khoa phan » hoa phan, khoa than, khoa phau
phan dang » phan dau, phan cong, nhan dan
thu sach » tu sach, thuat sach, thuoc sach
dang may » mang may, dang xay, dung may
tien va » dien va, thien van
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 tien va chuyen đe ky thuat: ((kien thuoc) or (trien thuong)) bach khoa phan dang may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tien va chuyen đe ky thuat: ((kien thuoc) OR (trien thuong)) bach khoa phan dang may tinh.
• Adding a wildcard symbol may retrieve word variants: thu sach tien va chuyen đe ky thuat: ((kien thuoc) or (trien thuong)) bach khoa phan dang may tinh*.