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