Perhaps you should try some spelling variations:
"jun dan dong snippets" » "jun dan code snippets", "jun van dong snippets", "jun dan dung snippets", "jun dao dong snippets", "jun fan dong snippets", "dung dan dong snippets", "tung dan dong 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 ("jun dan dong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("jun dan dong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( jun dan dong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("jun dan dong snippets"))) or ("locating bug core snippets"))*.