Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"muc duc toan snippets" » "muc duc tan snippets", "muc duc ton snippets", "muc duc hoan snippets", "muc dich toan snippets", "nuoc duc toan 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: (((("muc duc toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("muc duc toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( muc duc toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("muc duc toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.