Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi toan he snippets" » "khi toan he snippets", "chi thanh he snippets", "bai toan he snippets", "chi toan ho snippets", "chi toan ke snippets", "chi toan ve 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: (((("chi toan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chi toan he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi toan he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi toan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.