Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tren » sach tien, sach tranh
duong may » duong ma, dung may, duong mat
tren hoc » truyen hoc, trung hoc, triet hoc
su sach » so sach, vu sach
hoa tan » hoa dan, hoa van, hoa han
hoa tin » hoa tinh, hoat tinh, hoa sinh
thuc » thu
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: su sach tren hoc chuyen đe ky thuat: kien thuc hanh ((hoa tan) or (hoa tin)) duong may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tren hoc chuyen đe ky thuat: kien thuc hanh ((hoa tan) OR (hoa tin)) duong may tinh.
• Adding a wildcard symbol may retrieve word variants: su sach tren hoc chuyen đe ky thuat: kien thuc hanh ((hoa tan) or (hoa tin)) duong may tinh*.