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