Perhaps you should try some spelling variations:
sach tranh » canh tranh
cac nganh » hoc nganh
tranh ki » trinh ki, thanh kim, tranh cai
ki thuat » ky thuat
toan hoc » toan khoa, van hoc, hoa hoc
nganh ky » nganh y, nganh xay, hanh ky
thuat va » thuyet va, thuat bai, thuat bao
te sach » toc sach
thu cac » tu cac, thu xac, thu cuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tranh ki thuat toan hoc ) or ( thu cac nganh ky ((thuat va) or (thuat xay)) hoc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tranh ki thuat toan hoc ) OR ( thu cac nganh ky ((thuat va) OR (thuat xay)) hoc )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tranh ki thuat toan hoc ) or ( thu cac nganh ky ((thuat va) or (thuat xay)) hoc ))*.