Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach van chu snippets" » "sach han chu snippets", "sach va chu snippets", "bach van chu snippets", "sach van chi snippets", "sach van phu snippets", "sach van cau 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 van chu 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 van chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach van chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach van chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.