Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chat co toan snippets" » "thuat co toan snippets", "chat cua toan snippets", "chat deo toan snippets", "chat co ton snippets", "chat so toan snippets", "chat cong 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: (((("chat co 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: (((("chat co toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chat co toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chat co toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.