Perhaps you should try some spelling variations:
"dung sinh java snippets" » "duong sinh java snippets", "dang sinh java snippets", "dung ninh java snippets", "dung trinh java snippets", "dung using java snippets", "dung sinh va snippets"
"dong luc code snippets" » "nang luc code snippets", "dong lbm code snippets", "dong luc cong snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung sinh java snippets") or ("dong luc code snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung sinh java snippets") OR ("dong luc code snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( dung sinh java snippets ) or ( dong luc code snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sinh java snippets") or ("dong luc code snippets"))) or ("locating bug code slippers"))*.