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