Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vung dan mo snippets" » "vung dat mo snippets", "dung dan mo snippets", "tung dan mo snippets", "vung dan mon snippets", "vung dan so snippets", "vung fan mo 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: (((("vung dan 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: (((("vung dan mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vung dan mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vung dan mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.