Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chung ke co snippets" » "chung ve co snippets", "nhung ke co snippets", "phuong ke co snippets", "chung ke o snippets", "chung de 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: (((("chung ke co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung ke co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung ke co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung ke co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.