Perhaps you should try some spelling variations:
wrox programmer » from programmer, 10x programmer, you programmer
knox programmer » 10x programmer, from programmer, you programmer
non programmer » non programmers, non programmee, you programmer

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: ((wrox programmer) OR (((knox programmer) OR (non programmer)))) to programmer.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wrox programmer) or (((knox programmer) OR (non programmer)))) to programmer".
• Adding a wildcard symbol may retrieve word variants: ((wrox programmer) or (((knox programmer) OR (non programmer)))) to programmer*.