Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam linh c snippets" » "nam dinh c snippets", "tam linh c snippets", "nam danh c snippets", "nam linh chi snippets", "nam linh vuc snippets", "nam linh cao 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: (((("nam linh c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam linh c snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam linh c snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam linh c snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.