Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cost mat cua snippets" » "co mat cua snippets", "con mat cua snippets", "mot mat cua snippets", "cost ma cua snippets", "cost manh cua snippets", "cost mang cua 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: (((("cost mat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cost mat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cost mat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cost mat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.