Perhaps you should try some spelling variations:
"dong dong cach snippets" » "dong dong code snippets", "dong duong cach snippets", "cong dong cach snippets", "dung dong cach snippets", "dong dong cac snippets", "dong dong bach snippets", "dong phong cach 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: (((("dong dong cach 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 dong cach snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong dong cach snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong dong cach snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.