Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao quoc co snippets" » "dan quoc co snippets", "dao cuoc co snippets", "cao quoc co snippets", "dao quoc cao snippets", "dao quoc cho snippets", "dao duoc 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: (((("dao quoc 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: (((("dao quoc co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao quoc co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao quoc co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.