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