Perhaps you should try some spelling variations:
28electronic computers » electronic computers, electronics computers, electronic computer
22program languages » program languages, programs languages, program languge
programs language » programming language, process language, gram language
2f syntax » 2 syntax, f syntax, 2a syntax

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: %((((22program languages) OR (programs language))) OR (program language)) %28electronic computers%29 %2f syntax%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((22program languages) OR (programs language))) or (program language)) %28electronic computers%29 %2f syntax%22".
• Adding a wildcard symbol may retrieve word variants: %((((22program languages) OR (programs language))) or (program language)) %28electronic computers%29 %2f syntax%22*.