Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"song cua du snippets" » "cong cua du snippets", "dong cua du snippets", "huong cua du snippets", "song cua duc snippets", "song cua ndu snippets", "song cua su 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: (((("song cua du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("song cua du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( song cua du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("song cua du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.