Perhaps you should try some spelling variations:
"doi dan choi snippets" » "doi dan code snippets", "doi dan hoi snippets", "doi dam choi snippets", "doi dan cho snippets", "hoi dan choi snippets", "doi ban choi snippets", "doi dau choi snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("doi dan choi 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 dan choi snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( doi dan choi snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("doi dan choi snippets"))) or ("locating bug core snippets"))*.