Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hau chat hoc snippets" » "phap chat hoc snippets", "hoat chat hoc snippets", "nhan chat hoc snippets", "hau chat hoa snippets", "hau chat thom snippets", "hau cho 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: (((("hau chat 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: (((("hau chat hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hau chat hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hau chat hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.