Perhaps you should try some spelling variations:
"can tranh chao snippets" » "can tranh code snippets", "can tranh chap snippets", "can trinh chao snippets", "can tranh cua snippets", "canh tranh chao snippets", "tan tran chao snippets", "van ranh chao 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 ("can tranh chao snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("can tranh chao snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( can tranh chao snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("can tranh chao snippets"))) or ("locating bug core snippets"))*.