Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tap don cao snippets" » "tap doan cao snippets", "tap dong cao snippets", "tap ion cao snippets", "tap do cao snippets", "tap doc cao 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: (((("tap don 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: (((("tap don cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tap don cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tap don cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.