Perhaps you should try some spelling variations:
"can cao dong snippets" » "can cao code snippets", "can cao dang snippets", "can lao dong snippets", "can cao cong snippets", "ca cao dong snippets", "can cau dong snippets", "cay cao dong snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("can cao dong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("can cao dong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( can cao dong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("can cao dong snippets"))) or ("locating bug core snippets"))*.