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