Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong co lee snippets" » "dong co lee snippets", "cong cu lee snippets", "cong so lee snippets", "cong co le snippets", "cong ho lee 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: (((("cong co lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong co lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong co lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong co lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.