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