Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bieu toan da snippets" » "hieu toan da snippets", "kiem toan da snippets", "bien soan da snippets", "bieu toan dam snippets", "bieu toan dai snippets", "bieu toan dau 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: (((("bieu toan da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bieu toan da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bieu toan da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bieu toan da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.