Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao nam nghe snippets" » "nao nang nghe snippets", "nao van nghe snippets", "dao nam nghe snippets", "nam nam nghe snippets", "ngoc nam 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: (((("nao nam 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: (((("nao nam nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao nam nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao nam nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.