Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"toc cao dong snippets" » "toc cao code snippets", "toc cao dang snippets", "toc lao dong snippets", "toc cao cong snippets", "hoc cao dong snippets", "toc dao dong snippets", "toc co dong 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 cao dong 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 cao dong snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( toc cao dong snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc cao dong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.