Perhaps you should try some spelling variations:
sach tien » sach tren, sach thieu
hoa huyen » hoi huyen, hoa truyen, hong huyen
kien nuoc » bien nuoc, gieng nuoc, bien duoc
sinh khoa » sinh hoc, sinh hoat
tien hoa » dien hoa, trien hoat, tien va
anh khoa » doanh khoa, hang khoa
phan ung » phan xuong, phan cong
tu sach » thu sach, su sach, te sach
ung may » dung may, cung may, mang may
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: tu sach tien hoa huyen đe ky thuat: kien nuoc ((sinh khoa) or (anh khoa)) phan ung may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tien hoa huyen đe ky thuat: kien nuoc ((sinh khoa) OR (anh khoa)) phan ung may tinh.
• Adding a wildcard symbol may retrieve word variants: tu sach tien hoa huyen đe ky thuat: kien nuoc ((sinh khoa) or (anh khoa)) phan ung may tinh*.