Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi toan den snippets" » "khi toan den snippets", "chi thanh den snippets", "bai toan den snippets", "chi toan dien snippets", "chi toan de snippets", "chi toan nen 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 den 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 den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi toan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi toan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.