Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van tue cuc snippets" » "van tu cuc snippets", "van te cuc snippets", "van tuyen cuc snippets", "van tue cua snippets", "van tue xuc 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 tue cuc 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 tue cuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van tue cuc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van tue cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.