Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua duc son snippets" » "cua tuc son snippets", "cua nuoc son snippets", "cua quoc son snippets", "cua duc ton snippets", "cua duc con snippets", "cua duy son 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: (((("cua duc son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua duc son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua duc son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua duc son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.