Perhaps you should try some spelling variations:
"yang zhang a snippets" » "yan zhang a snippets", "cang thang a snippets", "lang thang a snippets", "yang khang a snippets", "yang chang ha snippets", "yang thang ay snippets", "yang zhang a slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

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