Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"wei pan hoan snippets" » "wei phan hoan snippets", "wei van hoan snippets", "wei luan hoan snippets", "wei tan hoan snippets", "wei tang hoan snippets", "wei fang 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: (((("wei pan 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: (((("wei pan hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( wei pan hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("wei pan hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.