Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"van trinh duc slippers" » "van thinh duc slippers", "van tinh duc slippers", "dan trinh duc slippers", "van trinh doc slippers", "van trinh dung slippers", "van trinh duc slippery", "van trinh duc grippers"
"dung java java snippets" » "dung va java 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: (((("van trinh duc slippers") or ("dung java java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van trinh duc slippers") OR ("dung java java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( van trinh duc slippers ) or ( dung java java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van trinh duc slippers") or ("dung java java snippets"))) or ("locating bugs code snippets"))*.