Perhaps you should try some spelling variations:
"quang trinh vat slippers" » "quang thinh vat slippers", "quang ninh vat slippers", "quang binh vat slippers", "quang trinh van slippers", "quang trinh luat slippers", "quang sinh vat slippers", "quang trinh vat slippery", "quang trinh vat 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 vat 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 vat slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( quang trinh vat slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("quang trinh vat slippers"))) or ("locating bug code snippets"))*.