Perhaps you should try some spelling variations:
"qua cua dong snippets" » "qua cua code snippets", "qua chua dong snippets", "qua cua cong snippets", "qua cua dang snippets", "quan cua dong snippets", "quang cua dong snippets", "qua quan 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 ("qua cua 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 ("qua cua dong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( qua cua dong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("qua cua dong snippets"))) or ("locating bug core snippets"))*.