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