Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sac cua du snippets" » "sach cua du snippets", "tac cua du snippets", "cac cua du snippets", "sac cua duc snippets", "sac cua ndu snippets", "sac 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: (((("sac 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: (((("sac cua du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sac cua du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sac cua du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.