Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu va ao snippets" » "lieu va ao snippets", "hieu qua ao snippets", "hieu va dao snippets", "hieu va bao snippets", "hieu va 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: (((("hieu va ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu va ao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu va ao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu va ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.