Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"co dan cao snippets" » "co dan code snippets", "co dan ca snippets", "co dam cao snippets", "co dan bao snippets", "co ban cao snippets", "ca dan cao snippets", "cao dang 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: (((("co dan 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: (((("co dan cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( co dan cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("co dan cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.