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