Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sai huy toan snippets" » "sai huy tran snippets", "sai huu toan snippets", "sai huy hoang snippets", "mai huy toan snippets", "sai quy 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: (((("sai huy 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: (((("sai huy toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sai huy toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sai huy toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.