Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi quan ve snippets" » "hoi quang ve snippets", "hai quan ve snippets", "moi quan ve snippets", "hoi quan he snippets", "hoi quan vi snippets", "hoi quan va 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: (((("hoi quan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi quan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi quan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi quan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.