Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hai thi java slippers" » "hai think java slippers", "ha thi java slippers", "hoi thi java slippers", "tai thi java slippers", "hai thi java slippery", "hai thi 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: (((("hai thi 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: (((("hai thi java slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai thi java slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai thi java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.