Perhaps you should try some spelling variations:
"dung toan ham slippers" » "dung toan ham slices", "dung doanh ham slippers", "dung thang ham slippers", "dung thanh ham slippers", "dung toan nham slippers", "dung toan dam slippers", "dung toan bam slippers"
"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 toan ham slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung toan ham slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung toan ham slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung toan ham slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.