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