Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van ket doc snippets" » "gan ket doc snippets", "luan ket doc snippets", "van kien doc snippets", "van ke doc snippets", "van ket doan 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 ket doc 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 ket doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van ket doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van ket doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.