Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach huy can snippets" » "sach hay can snippets", "sach thue can snippets", "bach hue can snippets", "sach duy can snippets", "sach thuy canh snippets", "sach huy tran 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: (((("sach huy can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sach huy can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach huy can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach huy can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.