Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra cau toi snippets" » "tra sau toi snippets", "ta cau toi snippets", "tra cuu toi snippets", "tra cau hoi snippets", "tra cau thi snippets", "tra cac toi 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: (((("tra cau toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra cau toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra cau toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra cau toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.