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