Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam linh hoc snippets" » "nam dinh hoc snippets", "tam linh hoc snippets", "nam danh hoc snippets", "nam sinh hoc snippets", "nam hinh hoc snippets", "nam tinh hoc 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 hoc 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 hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam linh hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam linh hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.