Perhaps you should try some spelling variations:
sach trinh » hanh trinh, sach kinh, sach tren
sach tranh » canh tranh
sach nganh » sach ngan, cac nganh, sach danh
xay thuat » my thuat, va thuat, cac thuat
toan hoc » toan khoa, van hoc, hoa hoc
nganh ky » nganh y, nganh xay, hanh ky
bo sach » co sach, hoc sach
thuat o » thuat do
o hoc » co hoc, mo hoc, so hoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( su ((sach trinh) OR (sach tranh)) xay thuat toan hoc ) or ( bo sach nganh ky thuat o hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su ((sach trinh) OR (sach tranh)) xay thuat toan hoc ) OR ( bo sach nganh ky thuat o hoc ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( su ((sach trinh) OR (sach tranh)) xay thuat toan hoc ) or ( bo sach nganh ky thuat o hoc ))*".