Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lan dan cach snippets" » "lan dan cac snippets", "lan dan canh snippets", "lan nhan cach snippets", "ban dan cach snippets", "van dan cach snippets", "lan dau 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: (((("lan 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: (((("lan dan cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan dan cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.