Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu tham di snippets" » "lieu tai di snippets", "lieu phap di snippets", "lieu tham do snippets", "lieu tham du snippets", "lieu tham dinh 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 tham di 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 tham di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu tham di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu tham di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.