Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap ngu de snippets" » "nhat ngu de snippets", "han ngu de snippets", "phap tu de snippets", "phap ngu du snippets", "phap ngu dien 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: (((("phap ngu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap ngu de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap ngu de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap ngu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.