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