Perhaps you should try some spelling variations:
"quan van chien snippets" » "quan van code snippets", "quan van hien snippets", "quan van hieu snippets", "quan van tien snippets", "luan van chien snippets", "quan va chien snippets", "quan luan chien snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java 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 ("quan van chien snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("quan van chien snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( quan van chien snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("quan van chien snippets"))) or ("locating bug core snippets"))*.