Perhaps you should try some spelling variations:
"doi dam cong snippets" » "doi dam code snippets", "doi dai cong snippets", "doi dam dong snippets", "doi dang cong snippets", "doi nam cong snippets", "doi dau cong snippets", "doi dan cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

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

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