Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu do hoat snippets" » "thu doi hoat snippets", "thu do hoa snippets", "thu co hoat snippets", "thuy do hoat snippets", "khu do hoat snippets", "tu do hoat 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 do hoat 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 do hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu do hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu do hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.