Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nong dan do snippets" » "cong dan do snippets", "nong san do snippets", "nguong dan do snippets", "nong dang do snippets", "nong dan dao snippets", "nong doan 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: (((("nong dan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nong dan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nong dan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nong dan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.