Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap cac son snippets" » "phap cach son snippets", "phan cac son snippets", "pha cac son snippets", "phap cac mon snippets", "phap cao son snippets", "phap bac son 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: (((("phap cac 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: (((("phap cac son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap cac son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap cac son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.