Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong luong cong snippets" » "cong luong code snippets", "cong thuong cong snippets", "nang luong cong snippets", "cong dong cong snippets", "cong dung cong snippets", "cong trong cong snippets", "cong cong cong snippets"
"dung java java snippets" » "dung va java snippets"

Try widening your search to All Fields.

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 ("cong luong 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 ("cong luong cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cong luong cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cong luong cong snippets"))) or ("locating bug core snippets"))*.