Perhaps you should try some spelling variations:
sach dien » mach dien, sach tien, dich dien
hoa huyen » hoi huyen, hoa truyen, hong huyen
luan cong » luat cong, luong cong, luan chung
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
may minh » may tinh, mai minh, cao minh
tu sach » thu sach, su sach, te sach

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 dien hoa huyen đe ky thuat: kien thuc anh khoa luan cong ((may minh) OR (van minh))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach dien hoa huyen đe ky thuat: kien thuc anh khoa luan cong ((may minh) OR (van minh))".
• Adding a wildcard symbol may retrieve word variants: tu sach dien hoa huyen đe ky thuat: kien thuc anh khoa luan cong ((may minh) OR (van minh))*.