Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hanh han le snippets" » "hanh nhan le snippets", "hanh phan le snippets", "hanh san le snippets", "hanh han lee snippets", "hanh han lew 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: (((("hanh han le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh han le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh han le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh han le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.