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