Perhaps you should try some spelling variations:
"quang trinh vi slippers" » "quang thinh vi slippers", "quang ninh vi slippers", "quang binh vi slippers", "quang trinh va slippers", "quang trinh ve slippers", "quang trinh viet slippers", "quang trinh vi slippery", "quang trinh vi 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"

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