Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung cu vo snippets" » "dung cua vo snippets", "dung co vo snippets", "dung cho vo snippets", "dung cu va snippets", "dung cu bo snippets", "dung cu co 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: (((("dung cu vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cu vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cu vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cu vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.