Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc bai ke snippets" » "hoc dai ke snippets", "hoc giai ke snippets", "hoc ba ke snippets", "hoc ban ke snippets", "hoc bai khen 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: (((("hoc bai ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc bai ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc bai ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc bai ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.