Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc cua toi snippets" » "luc chua toi snippets", "luc nua toi snippets", "tuc cua toi snippets", "luc cua hoi snippets", "luc cua moi snippets", "luc cua loai 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 toi 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 toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc cua toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc cua toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.