Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc ban toi snippets" » "hoc bang toi snippets", "hoc dan toi snippets", "hoc bai toi snippets", "hoc ban thoi snippets", "hoc ban moi snippets", "hoc ban thi 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 ban toi 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 ban toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc ban toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc ban toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.