Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat do voi snippets" » "nhat so voi snippets", "nhat de voi snippets", "hat do voi snippets", "nhat doi voi snippets", "nhat dao voi snippets", "nhat do moi 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: (((("nhat do voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat do voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat do voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat do voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.