Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"doc lieu dao slippers" » "duoc lieu dao slippers", "doc hieu dao slippers", "du lieu dao slippers", "doc lieu nano slippers", "doc lieu va slippers", "doc lieu tai slippers", "doc lieu dao slippery", "doc lieu dao grippers"
"locating bug code snippets" » "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: (((("dung java java snippets") or ("doc lieu dao slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("doc lieu dao slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( doc lieu dao slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("doc lieu dao slippers"))) or ("locating bug code snippets"))*.