Perhaps you should try some spelling variations:
sach trien » sach tien, sach tren, sach thieu
hoc chuyen » khong chuyen
trien hoc » triet hoc, trien thuoc, truyen hoc
kien nuoc » bien nuoc, gieng nuoc, bien duoc
nuoc anh » ngoc anh, nuoc sach, duc anh
anh khoa » doanh khoa, hang khoa
te sach » toc sach
ung may » dung may, cung may, mang may

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach trien hoc chuyen đe ky thuat: kien nuoc anh khoa luan ((ung may) or (dung tai)) minh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach trien hoc chuyen đe ky thuat: kien nuoc anh khoa luan ((ung may) OR (dung tai)) minh.
• Adding a wildcard symbol may retrieve word variants: te sach trien hoc chuyen đe ky thuat: kien nuoc anh khoa luan ((ung may) or (dung tai)) minh*.