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