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