Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi nghe noi snippets" » "pho nghe noi snippets", "thai nghe noi snippets", "pham nghe noi snippets", "phi nghe hoa snippets", "phi ghep noi snippets", "phi nghe vi 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 nghe noi 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 nghe noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi nghe noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi nghe noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.