Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc son toc snippets" » "ngoc hoa toc snippets", "ngoc lan toc snippets", "ngoc so toc snippets", "ngoc son nuoc snippets", "ngoc song toi 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: (((("ngoc son toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngoc son toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc son toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc son toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.