Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao khi cua snippets" » "cao khai cua snippets", "co khi cua snippets", "cao thi cua snippets", "cao chi cua snippets", "cao thai 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 khi 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 khi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao khi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao khi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.