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