Perhaps you should try some spelling variations:
hoat chuyen » hoa chuyen, thuat chuyen, hoc chuyen
sach trien » sach tien, sach tren, sach thieu
trien hoat » tien hoa
bien nuoc » bien duoc, bien thuoc, gieng nuoc
nuoc sach » nguoi sach, hoc sach, cuoc cach
sach khoa » bach khoa, sach nha, anh khoa
dung may » dung va, dung tai, mang may
te sach » toc sach
ung may » cung may, mang may, dung mao

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 hoat chuyen đe ky thuat: bien nuoc sach khoa luan ((ung may) or (dung may)) minh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach trien hoat chuyen đe ky thuat: bien nuoc sach khoa luan ((ung may) OR (dung may)) minh.
• Adding a wildcard symbol may retrieve word variants: te sach trien hoat chuyen đe ky thuat: bien nuoc sach khoa luan ((ung may) or (dung may)) minh*.