Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"com duoi voi snippets" » "co duoc voi snippets", "dam duoi voi snippets", "nam duoi voi snippets", "com doi voi snippets", "com duoc hoi snippets", "com duoi goc 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: (((("com duoi voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("com duoi voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( com duoi voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("com duoi voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.