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