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