Perhaps you should try some spelling variations:
phong thuyen » phong tuyen, khong chuyen, phong thuy
sinh phong » dinh phong, minh phong, sinh khong
sach sinh » sach kinh, sach danh, sach song
khoa phan » hoa phan, khoa than, khoa phau
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
tu sach » thu sach, su sach, te sach
cong te » cong ty, cong tu, cong de
cong ti » cong ty, cong li, cong tu

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 sinh phong thuyen đe ky thuat: kien thuc anh khoa phan ((cong te) OR (cong ti)) dinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach sinh phong thuyen đe ky thuat: kien thuc anh khoa phan ((cong te) OR (cong ti)) dinh".
• Adding a wildcard symbol may retrieve word variants: tu sach sinh phong thuyen đe ky thuat: kien thuc anh khoa phan ((cong te) OR (cong ti)) dinh*.