Perhaps you should try some spelling variations:
22programming languages » 3.2programming languages, programming languages, onprogramming language
electronics computers » electronic computers, electronics computer, electronics chapter
programming language » programming languages, program language
electronic computer » electronic computers, electronics computer, electronic computing
2f syntax » 2 syntax, 2.1 syntax, 2.2 syntax
2a syntax » a syntax, 2 syntax, la syntax
f syntax » _ syntax, 3 syntax, 2 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)) %((electronic computer) OR (electronics computers))%29 %((((2f syntax) OR (2a syntax))) OR (f syntax))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22programming languages) or (programming language)) %((electronic computer) or (electronics computers))%29 %((((2f syntax) OR (2a syntax))) or (f syntax))%22".
• Adding a wildcard symbol may retrieve word variants: %((22programming languages) or (programming language)) %((electronic computer) or (electronics computers))%29 %((((2f syntax) OR (2a syntax))) or (f syntax))%22*.