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