Perhaps you should try some spelling variations:
28electronics computerss » electronic computers, electronics computer, electronic computer
22programming languages » 3.2programming languages, programming languages, onprogramming language
electronics computers » electronic computers, electronics computer, electronics chapter
programming language » programming languages, program language
2a syntax » a syntax, 2 syntax, la syntax
f syntax » _ syntax, a syntax, 3 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: %((22programming languages) OR (programming language)) %((28electronics computerss) OR (electronics computers))%29 %((2a syntax) OR (f syntax))%22.
• Adding a wildcard symbol may retrieve word variants: %((22programming languages) or (programming language)) %((28electronics computerss) or (electronics computers))%29 %((2a syntax) or (f syntax))%22*.