Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach sinh » sach kinh, sach danh, sach song
thuc cach » thuoc sach, truoc cach, thuc hanh
cong thuy » cong thuc, dong thuy, phong thuy
thuy tinh » thuy linh, thue tinh, thuy anh
tu sach » thu sach, su sach, te sach
hoa tan » hoa dan, hoa van, hoa tin

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach sinh hoc chuyen đe ky thuat: kien thuc cach ((co phan) or (hoa tan)) cong thuy tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach sinh hoc chuyen đe ky thuat: kien thuc cach ((co phan) OR (hoa tan)) cong thuy tinh.
• Adding a wildcard symbol may retrieve word variants: tu sach sinh hoc chuyen đe ky thuat: kien thuc cach ((co phan) or (hoa tan)) cong thuy tinh*.