Perhaps you should try some spelling variations:
"dung van cong snippets" » "dung van code snippets", "duong van cong snippets", "dung va cong snippets", "dang van cong snippets", "dung van dong snippets", "dung van phong snippets", "dung phan 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 van cong snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung van cong snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( dung van cong snippets ) or ( dung java java snippets ))) or ( locating bug core snippets ))*.