Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang hoa du snippets" » "hang hoa du snippets", "tang ha du snippets", "tang ho du snippets", "tang hoa dau snippets", "tang hoa lu snippets", "tang hoa su 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: (((("tang hoa du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tang hoa du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang hoa du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang hoa du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.