Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban nhan toc snippets" » "ban than toc snippets", "van nhan toc snippets", "ban thanh toc snippets", "ban nhan hoc snippets", "ban nhan thuc snippets", "ban nhan cuoc 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: (((("ban nhan 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: (((("ban nhan toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban nhan toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban nhan toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.