Perhaps you should try some spelling variations:
phan xuong » phan cong
hoc chuyen » khong chuyen
xuong doan » xuong dan, xuong hoan, phuong doan
sach tien » sach tren, sach thieu
thuc bach » truc bach, thuoc sach, thuc hanh
thuc cach » thuoc sach, truoc cach, thuc hanh
doan minh » doan hinh, doan tinh, hoang minh
tien hoc » tin hoc, tien hoa, dien hoc
hoa phan » hoa dan, co phan
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 tien hoc chuyen đe ky thuat: kien ((thuc bach) or (thuc cach)) hoa phan xuong doan minh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tien hoc chuyen đe ky thuat: kien ((thuc bach) OR (thuc cach)) hoa phan xuong doan minh.
• Adding a wildcard symbol may retrieve word variants: su sach tien hoc chuyen đe ky thuat: kien ((thuc bach) or (thuc cach)) hoa phan xuong doan minh*.