Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"trinh viet van snippets" » "ninh viet van snippets", "trinh vat van snippets", "trinh viet nam snippets", "trinh viet anh snippets", "trinh viet ha snippets"
"dung java java slippers" » "dung va java slippers", "dung java java slippery", "dung java java grippers"

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 slippers") or ("trinh viet van snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java slippers") OR ("trinh viet van snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dung java java slippers ) or ( trinh viet van snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java slippers") or ("trinh viet van snippets"))) or ("locating bugs code snippets"))*.