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