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