Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam duoi voi snippets" » "dam cuoi voi snippets", "nam duoi voi snippets", "dam duong voi snippets", "dam doi voi snippets", "dam duoc hoi snippets", "dam 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: (((("dam 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: (((("dam duoi voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam duoi voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam duoi voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.