Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc va nghe snippets" » "luc van nghe snippets", "luc ve nghe snippets", "luc va nghi snippets", "duc va nghe snippets", "tuc va nghe snippets", "loc va nghe 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 va nghe 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 va nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc va nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc va nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.