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