Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dem hoi doai snippets" » "dem hoi doi snippets", "dem hoi thoai snippets", "dem hoi dap snippets", "dem toi doai snippets", "dep hoi doai snippets", "dam choi 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: (((("dem 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: (((("dem hoi doai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dem hoi doai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dem hoi doai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.