Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc len con snippets" » "thuc ben con snippets", "thuc hien con snippets", "thuc tien con snippets", "thuc len cong snippets", "thuc lon con snippets", "thuc le 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 len 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 len con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc len con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc len con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.