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