Perhaps you should try some spelling variations:
"mat cau chap snippets" » "mat cau code snippets", "mat cau cham snippets", "mat cau chan snippets", "mat cau phap snippets", "mau cau chap snippets", "dat cau chap snippets", "mat can chap 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 ("mat cau chap snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("mat cau chap snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( mat cau chap snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("mat cau chap snippets"))) or ("locating bug core snippets"))*.