Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duong cong chu snippets" » "duong cong code snippets", "dung cong chu snippets", "luong cong chu snippets", "duong trong chu snippets", "duong cong chuc snippets", "duong cong chua snippets", "duong cong cu 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 ("duong cong chu snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("duong cong chu snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( duong cong chu snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("duong cong chu snippets"))) or ("locating bug core snippets"))*.