Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mac dong cao snippets" » "tac dong cao snippets", "cac dong cao snippets", "cac duong cao snippets", "mac duong cao snippets", "mac dong co snippets", "mac dong cho 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: (((("mac dong cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mac dong cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mac dong cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mac dong cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.