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