Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc phap voi snippets" » "hoc phan voi snippets", "hoc phat voi snippets", "hoc pho voi snippets", "hoc phap boi snippets", "hoc pham voi snippets", "hoc phap 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: (((("hoc phap 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: (((("hoc phap voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc phap voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc phap voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.