Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cham mat hoc snippets" » "ham mat hoc snippets", "nham mat hoc snippets", "pham ma hoc snippets", "cham vat hoc snippets", "cham chat hoc snippets", "cham mach hoc 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: (((("cham mat hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cham mat hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cham mat hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham mat hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.