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