Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"toc lieu dao slippers" » "toc thieu dao slippers", "duoc lieu dao slippers", "tai lieu dao slippers", "toc lieu nano slippers", "toc lieu va slippers", "toc lieu tai slippers", "toc lieu dao slippery", "toc 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 ("toc 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 ("toc lieu dao slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( toc lieu dao slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("toc lieu dao slippers"))) or ("locating bug code snippets"))*.