Perhaps you should try some spelling variations:
"doi cach cong snippets" » "doi cach code snippets", "doi cac cong snippets", "doi cach con snippets", "doi khach cong snippets", "loi cach cong snippets", "doi canh cong snippets", "dong cach cong 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 ("doi cach cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("doi cach cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( doi cach cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("doi cach cong snippets"))) or ("locating bug core snippets"))*.