Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi sach hoi snippets" » "pham sach hoi snippets", "phi san hoi snippets", "moi sach hoi snippets", "phi sach doi snippets", "phi sach moi snippets", "phi cach thoi 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: (((("phi sach hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi sach hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi sach hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi sach hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.