Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan va toi snippets" » "doan va toi snippets", "dan ca toi snippets", "ban va toi snippets", "dan van toi snippets", "dan va tai snippets", "dan va thi 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: (((("dan va 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: (((("dan va toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan va toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan va toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.