Perhaps you should try some spelling variations:
"rong cho cong snippets" » "rong cho code snippets", "trong cho cong snippets", "dong cho cong snippets", "luong cho cong snippets", "rong cao cong snippets", "rong cua cong snippets", "rong cac cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("rong cho cong snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("rong cho cong snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( rong cho cong snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("rong cho cong snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.