Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tren » sach tien, sach tranh
thuc bach » truc bach, thuc cach, thuoc sach
thuong va » truong va, thong va, thuong mai
tren hoc » truyen hoc, trung hoc, triet hoc
hoa phan » hoa dan
su sach » so sach, vu sach
va tinh » may tinh

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 tren hoc chuyen đe ky thuat: kien thuc bach ((hoa phan) OR (co phan)) thuong va tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tren hoc chuyen đe ky thuat: kien thuc bach ((hoa phan) OR (co phan)) thuong va tinh".
• Adding a wildcard symbol may retrieve word variants: su sach tren hoc chuyen đe ky thuat: kien thuc bach ((hoa phan) OR (co phan)) thuong va tinh*.