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