Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mua dan cach snippets" » "mua dan cac snippets", "mua dan canh snippets", "mua nhan cach snippets", "cua dan cach snippets", "mua ban cach snippets", "cua dang cach 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: (((("mua dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mua dan cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mua dan cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mua dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.