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