Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc thi con snippets" » "thuc thai con snippets", "thuc thuc con snippets", "luc thi con snippets", "thuc thi cong snippets", "thuc thi mon snippets", "thuc chi con 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: (((("thuc thi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuc thi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc thi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc thi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.