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