Perhaps you should try some spelling variations:
"hoc anh cong snippets" » "hoc anh code snippets", "hoc hanh cong snippets", "hoc anh dong snippets", "hoc thanh cong snippets", "hoc nganh cong snippets", "hoc nhanh cong snippets", "hoc sinh cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"

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

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