Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"yang zhang wei snippets" » "yan zhang wei snippets", "cang thang wei snippets", "lang thang wei snippets", "yang chang wei snippets", "yang zhong wei snippets"
"locating bug core snippets" » "locating bug code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("yang zhang wei snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("yang zhang wei snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( yang zhang wei snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("yang zhang wei snippets"))) or ("locating bug core snippets"))*.