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