Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao via cua snippets" » "cao va cua snippets", "cao giai cua snippets", "cao viet cua snippets", "cao gia cua snippets", "cao gian cua snippets", "cao giau 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: (((("cao via 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: (((("cao via cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao via cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao via cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.