Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang ke do snippets" » "thong ke do snippets", "hanh kem do snippets", "nhung ke do snippets", "hang ke o snippets", "hang ke co snippets", "hang ke mo 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: (((("hang ke do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang ke do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang ke do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang ke do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.