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