Perhaps you should try some spelling variations:
"mat ca cham snippets" » "mat ca code snippets", "mat cau cham snippets", "mat va cham snippets", "mat co cham snippets", "mat cua cham snippets", "mat can cham snippets", "mat ma cham 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 ca cham 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 ca cham snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( mat ca cham snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("mat ca cham snippets"))) or ("locating bug core snippets"))*.