Perhaps you should try some spelling variations:
sach trien » sach tien, sach tren, sach thieu
trien hoat » tien hoa
hoat huyen » hoa huyen, dat huyen, hoi huyen
thuc cach » thuoc sach, truoc cach, thuc hanh
khoa phau » hoa phan, khoa kham, khoa than
phau cung » phan cung, pha cung, phap cung
quy trinh » qua trinh, quy dinh
thuc cac » tuc cac, phuc cac, thac cac
cung quy » cong quy, dung quy, nhung quy
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 trien hoat huyen đe ky thuat: kien ((thuc cac) OR (thuc cach)) khoa phau cung quy trinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach trien hoat huyen đe ky thuat: kien ((thuc cac) OR (thuc cach)) khoa phau cung quy trinh".
• Adding a wildcard symbol may retrieve word variants: tu sach trien hoat huyen đe ky thuat: kien ((thuc cac) OR (thuc cach)) khoa phau cung quy trinh*.