Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau sieu can snippets" » "dau tien can snippets", "cau dieu can snippets", "may sieu can snippets", "dau dieu can snippets", "dau sieu van snippets", "dau sieu dan 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: (((("dau sieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau sieu can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau sieu can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau sieu can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.