Perhaps you should try some spelling variations:
"nhu cao dong snippets" » "nhu cao code snippets", "nhu cao dang snippets", "nhu lao dong snippets", "nhu cao cong snippets", "nha cao dong snippets", "nhu cau dong snippets", "nghe 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 ("nhu 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 ("nhu cao dong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( nhu cao dong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("nhu cao dong snippets"))) or ("locating bug core snippets"))*.