Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc luan de snippets" » "toc luan code snippets", "hoc luan de snippets", "thuoc luan de snippets", "nuoc luan de snippets", "toc luan den snippets", "toc luan ve snippets", "toc luat de snippets"
"python using java snippets" » "python using data 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: (((("toc luan de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc luan de snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc luan de snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc luan de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.