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