Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho phan me snippets" » "co phan me snippets", "hoc phan me snippets", "hoa phan me snippets", "cho phan mem snippets", "cho phan le snippets", "cho phan mo 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: (((("cho phan me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho phan me snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho phan me snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho phan me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.