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