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