Perhaps you should try some spelling variations:
kien thuoc » kien thuc, bien thuoc, trien thuoc
hoc chuyen » khong chuyen
thuoc sach » hoc sach, nuoc sach, thuat sach
phan xuong » phan cong
sach khoa » bach khoa, sach nha, anh khoa
khoa phan » hoa phan, khoa than, khoa phau
xuong may » cuong ma, xuong nau, duong ma
thu sach » tu sach, thuat sach, thu hoach
te sach » toc 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: ((thu sach) or (te sach)) sinh hoc chuyen đe ky thuat: kien thuoc sach khoa phan xuong may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (te sach)) sinh hoc chuyen đe ky thuat: kien thuoc sach khoa phan xuong may tinh.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (te sach)) sinh hoc chuyen đe ky thuat: kien thuoc sach khoa phan xuong may tinh*.