Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc cua moi snippets" » "luc chua moi snippets", "luc nua moi snippets", "tuc cua moi snippets", "luc cua mot snippets", "luc cua hoi 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: (((("luc cua moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc cua moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc cua moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc cua moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.