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