Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"do ren chen snippets" » "do ben chen snippets", "do tren chien snippets", "do chen chen snippets", "do tren chen snippets", "do gen chen snippets"
"locating bug code snippets" » "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: (((("do ren chen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("do ren chen snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( do ren chen snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("do ren chen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.