Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu tu don snippets" » "thu tuc don snippets", "tu tu don snippets", "thu thuy don snippets", "thu tu dong snippets", "thu tu do snippets", "thu tu den 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: (((("thu tu don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu tu don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu tu don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu tu don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.