Perhaps you should try some spelling variations:
sach trien » sach tien, sach tren, sach thieu
quy trinh » qua trinh, quy dinh
thac cach » thuc cach, nhan cach, cac cach
trien hoa » trien hoat, trien khoa, tien hoa
hoa huyen » hoi huyen, hoa truyen, hong huyen
phau cung » phan cung, pha cung, phap cung
khoa phau » hoa phan, khoa kham, khoa than
cung quy » cong quy, dung quy, nhung quy
thac cac » thoai cac, thanh cac, thuc cach
te sach » toc sach

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 hoa huyen đe ky thuat: kien ((thac cac) or (thac cach)) khoa phau cung quy trinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach trien hoa huyen đe ky thuat: kien ((thac cac) OR (thac cach)) khoa phau cung quy trinh.
• Adding a wildcard symbol may retrieve word variants: te sach trien hoa huyen đe ky thuat: kien ((thac cac) or (thac cach)) khoa phau cung quy trinh*.