Perhaps you should try some spelling variations:
"hoi xuan trinh snippets" » "hoi qua trinh snippets", "hoi xuan dinh snippets", "hoi xuan kinh snippets", "ho xuan trinh snippets", "hoi luan trinh snippets", "hoi xuat trinh snippets"
"dung java java slippers" » "dung va java slippers", "dung java java slippery", "dung java java grippers"
"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: (((("hoi xuan trinh snippets") or ("dung java java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi xuan trinh snippets") OR ("dung java java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi xuan trinh snippets ) or ( dung java java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi xuan trinh snippets") or ("dung java java slippers"))) or ("locating bug code snippets"))*.