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