Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi hieu de snippets" » "cao hieu de snippets", "chi tiet de snippets", "co hieu de snippets", "chi hieu ve snippets", "chi hieu he snippets", "chi hieu le 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 de 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 de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi hieu de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi hieu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.