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