Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nong doan do snippets" » "nong dan do snippets", "cong doan do snippets", "long doan do snippets", "nong doan o snippets", "nong toan do snippets", "nong doanh dao 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 doan 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 doan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nong doan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nong doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.