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