Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat tinh cao snippets" » "dac tinh cao snippets", "dao tinh cao snippets", "sat tinh cao snippets", "dat tinh lao snippets", "dat tinh chat snippets", "dat tinh cach 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: (((("dat tinh cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat tinh cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat tinh cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat tinh cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.