Perhaps you should try some spelling variations:
"dngu java java snippets" » "ngu java java snippets", "dngu java java slippers"
"cao cong va snippets" » "cac cong va snippets", "cao dang va snippets", "cua cong va snippets", "cao dong va snippets", "cao cong ha snippets", "cao cong tac snippets", "cao cong va slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("dngu java java snippets") or ("cao cong va snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dngu java java snippets") OR ("cao cong va snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dngu java java snippets ) or ( cao cong va snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dngu java java snippets") or ("cao cong va snippets"))) or ("locating bug code snippets"))*.