Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan duoc vo snippets" » "da duoc vo snippets", "dat duoc vo snippets", "dan quoc vo snippets", "dan duoc va snippets", "dan duoc co snippets", "dan duoc do 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: (((("dan duoc 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: (((("dan duoc vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan duoc vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan duoc vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.