Perhaps you should try some spelling variations:
"dong java java snippets" » "dong va java snippets"
"anh dung code slippers" » "anh dung cong slippers", "anh dung co slippers", "anh dung de slippers", "anh dong code slippers", "anh huong code slippers", "sach dung code slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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 java java snippets") or ("anh dung code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong java java snippets") OR ("anh dung code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong java java snippets ) or ( anh dung code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong java java snippets") or ("anh dung code slippers"))) or ("locating bug code snippets"))*.