Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat tap hoa snippets" » "man tap hoa snippets", "mat tai hoa snippets", "mat thay hoa snippets", "mat tap hop snippets", "mat tap doan snippets", "mat tap toan snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("mat tap hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat tap hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat tap hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat tap hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.