Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doc cao cao snippets" » "doc cao code snippets", "hoc cao cao snippets", "do cao cao snippets", "doc dao cao snippets", "doc cao cap snippets", "doc bao cao snippets", "doc tao cao 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: (((("doc cao cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc cao cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doc cao cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc cao cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.