Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van le voi snippets" » "van de voi snippets", "ban le voi snippets", "van le hoi snippets", "van le loi snippets", "van lieu voi 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: (((("van le 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: (((("van le voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van le voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van le voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.