Perhaps you should try some spelling variations:
"lua anh cong snippets" » "lua anh code snippets", "lua hanh cong snippets", "lua anh dong snippets", "lua thanh cong snippets", "luan anh cong snippets", "luu anh cong snippets", "sua anh cong 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 ("lua anh cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("lua anh cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( lua anh cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("lua anh cong snippets"))) or ("locating bug core snippets"))*.