Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi va tong snippets" » "doi va thong snippets", "doi va tuong snippets", "doi va trong snippets", "hoi va tong snippets", "noi va tong snippets", "dai va tong 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: (((("doi va tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi va tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi va tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi va tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.