Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nga dan cach snippets" » "nga dan cac snippets", "nga dan canh snippets", "nga nhan cach snippets", "ngu dan cach snippets", "nga dao cach snippets", "nga den cach 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: (((("nga dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nga dan cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nga dan cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nga dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.