Perhaps you should try some spelling variations:
sach trinh » sach tranh, hanh trinh, sach kinh
trinh xay » trinh ky
xay thuat » my thuat, va thuat, cac thuat
sach hanh » sach danh, sach han, sac hanh
toan hoc » toan khoa, van hoc, hoa hoc
su sach » so sach, vu sach
bo sach » co sach, hoc sach
hanh ky » hanh kem
mo hoc » mon hoc, co hoc
o hoc » co hoc, so hoc, y 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 xay thuat toan hoc ) or ( bo sach hanh ky thuat ((o hoc) OR (mo hoc)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach trinh xay thuat toan hoc ) OR ( bo sach hanh ky thuat ((o hoc) OR (mo hoc)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( su sach trinh xay thuat toan hoc ) or ( bo sach hanh ky thuat ((o hoc) OR (mo hoc)) ))*".