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