Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"yan zhang lu snippets" » "yang zhang lu snippets", "ban hang lu snippets", "van khang lu snippets", "yan hang ly snippets", "yan cheng lu snippets", "yan guang lu snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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: (((("using java code snippets") OR ("yan zhang lu snippets"))) OR ("locating bug code slippers"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( yan zhang lu snippets ))) or ( locating bug code slippers ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("yan zhang lu snippets"))) or ("locating bug code slippers"))*.