Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat pham do snippets" » "san pham do snippets", "tac pham do snippets", "hai pham do snippets", "mat pham doi snippets", "mat pham mo snippets", "mat pham o 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: (((("mat pham do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat pham do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat pham do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat pham do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.