Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tai su toan snippets" » "tai su hoan snippets", "tai so toan snippets", "tai su toa snippets", "tai tu toan snippets", "lai su 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 su 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 su toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tai su toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tai su toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.