Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tung dan can snippets" » "dung dan can snippets", "huong dan can snippets", "trung dai can snippets", "tung dan chan snippets", "tung dan canh snippets", "tung dan 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: (((("tung dan 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: (((("tung dan can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tung dan can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tung dan can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.