Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kem tap toan snippets" » "kem tap doan snippets", "kem tap quan snippets", "kem bai toan snippets", "kiem tap toan 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: (((("kem tap toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kem tap toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kem tap toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kem tap toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.