Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan dung cua snippets" » "van dung cua snippets", "dan dung cua snippets", "lan hung cua snippets", "lan dung luan snippets", "lan dung cho 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 dung 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 dung cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan dung cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan dung cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.