Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tro pham can snippets" » "tro phat can snippets", "trot phan can snippets", "tac pham can snippets", "tro pham van snippets", "tro pham lan snippets", "tro pham ca 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: (((("tro pham can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tro pham can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tro pham can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tro pham can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.