Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den hoi doai snippets" » "den hoi doi snippets", "den hoi thoai snippets", "den hoi dap snippets", "dan hoi doai snippets", "dem hoi doai snippets", "den coi doai 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: (((("den hoi doai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den hoi doai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den hoi doai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den hoi doai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.