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