Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hoe phe snippets" » "van hoa phe snippets", "van hoc phe snippets", "van hieu phe snippets", "van ho phe snippets", "van khoe phu 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 hoe phe 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 hoe phe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hoe phe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hoe phe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.