Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sach cua phe snippets" » "cach cua phe snippets", "mach cua phe snippets", "sac cua phe snippets", "sach ca phe snippets", "sach cua che snippets", "sach cua he 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 cua phe 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 cua phe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sach cua phe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sach cua phe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.