Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trong cac dang slippers" » "trong cao dang slippers", "trong cac dan slippers", "trong cac cong slippers", "trong cac dang slippery", "trong cac dang 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 dang 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 dang slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong cac dang slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong cac dang slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.