Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sam thi hoan snippets" » "sam thi hoa snippets", "sam thi hanh snippets", "sam thi hong snippets", "dam thi hoan snippets", "sat thi hoan snippets", "sa thi hoan 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: (((("sam thi hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sam thi hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sam thi hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sam thi hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.