Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao khach da snippets" » "can khach da snippets", "cao thach da snippets", "vay khach da snippets", "cao khach san snippets", "cao khach deu snippets", "cao kham da 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 khach da 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 khach da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao khach da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao khach da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.