Perhaps you should try some spelling variations:
"nang do cong snippets" » "nang do code snippets", "nang doc cong snippets", "nang dao cong snippets", "nang du cong snippets", "nang doi cong snippets", "nang do hong snippets", "nang bo 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 ("nang do 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 ("nang do cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( nang do cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("nang do cong snippets"))) or ("locating bug core snippets"))*.