Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toan n2 doc snippets" » "toan nha doc snippets", "toan ung doc snippets", "toan anh doc snippets", "toan n1 doc snippets", "toan n3 doc 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: (((("toan n2 doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan n2 doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan n2 doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan n2 doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.