Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai than hoc snippets" » "hai thanh hoc snippets", "hai tan hoc snippets", "hai phan hoc snippets", "hai toan hoc snippets", "hai thai hoc snippets", "hai than doc 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: (((("hai than 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: (((("hai than hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai than hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai than hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.