Perhaps you should try some spelling variations:
"mat cac hoat snippets" » "mat cac code snippets", "mat cao hoat snippets", "mat cac hat snippets", "mat cac khoan snippets", "sat cac hoat snippets", "ma cac hoat snippets", "mat can hoat 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 cac hoat 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 cac hoat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( mat cac hoat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("mat cac hoat snippets"))) or ("locating bug core snippets"))*.