Perhaps you should try some spelling variations:
sach hanh » sach danh, sach han, sac hanh
xay thuat » ky thuat, my thuat, va thuat
sach ngan » sach ngon, sach nha, sach han
cao quyet » cach quyet, ra quyet, van quyet
quyet hoc » huyet hoc, tuyet hoc, quyet hoa
hanh xay » hanh may, manh xay, anh xay
toan hoc » toan khoa, van hoc, hoa hoc
ngan cao » ngan can, ngang cho, nganh dao
tu sach » thu sach, su sach, te sach
hoc hoi » hoc khoi, hoc hoa, hoc noi

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 hanh xay thuat toan hoc ) or ( tu sach ngan cao quyet hoc hoi ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach hanh xay thuat toan hoc ) OR ( tu sach ngan cao quyet hoc hoi )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach hanh xay thuat toan hoc ) or ( tu sach ngan cao quyet hoc hoi ))*.