Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc dung co snippets" » "duc dung co snippets", "tuc dung co snippets", "luc dong co snippets", "luc dung cho snippets", "luc dung cong snippets", "luc dung cua 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 dung co 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 dung co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc dung co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc dung co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.