Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vat van doan snippets" » "vat van doanh snippets", "vat van toan snippets", "vat van hoan snippets", "vat va doan snippets", "van van doan snippets", "vat ran doan 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: (((("vat van doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vat van doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vat van doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vat van doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.