Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"yi wen zhang snippets" » "yi wei zhang snippets", "yi bowen zhang snippets", "yi peng zhang snippets", "li wen zhang snippets", "yi wen zhang slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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