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