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