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