Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
thuoc sach » hoc sach, nuoc sach, thuoc sinh
thuat sach » thuat lanh, thuat san
sanh tren » sach tren, lanh tren, sinh tren
tren hoc » truyen hoc, trung hoc, triet hoc
van cong » van dong, van phong, phan cong
so sanh » do sanh
hoa van » hoa dan, hoang van, hoa phan
cong ha » cong hoa, dong ha, cong tac
ha dinh » ha tinh, va dinh, ba dinh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh tren hoc chuyen đe ky thuat: kien ((thuoc sach) OR (thuat sach)) hoa van cong ha dinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh tren hoc chuyen đe ky thuat: kien ((thuoc sach) OR (thuat sach)) hoa van cong ha dinh".
• Adding a wildcard symbol may retrieve word variants: so sanh tren hoc chuyen đe ky thuat: kien ((thuoc sach) OR (thuat sach)) hoa van cong ha dinh*.