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