Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan dam cao snippets" » "van dam cao snippets", "lan dau cao snippets", "san dam cao snippets", "lan dam bao snippets", "lan nam cao snippets", "lan dam rao 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 dam cao 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 dam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan dam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan dam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.