Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu nam do snippets" » "lieu lam do snippets", "lieu nano do snippets", "lieu tham do snippets", "lieu nam dao snippets", "lieu nam doi snippets", "lieu nam bo 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: (((("lieu nam 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: (((("lieu nam do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu nam do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu nam do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.