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