Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan tang cua snippets" » "luan tang cua snippets", "fan tang cua snippets", "lan lang cua snippets", "lan mang cua snippets", "lan hang cua snippets", "lan tang luan 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: (((("lan tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lan tang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan tang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan tang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.