Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham dan cach snippets" » "ham dan cac snippets", "ham dan canh snippets", "ham nhan cach snippets", "nam dan cach snippets", "hat dan cach snippets", "hai dan 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: (((("ham 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: (((("ham dan cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham dan cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.