Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat canh he snippets" » "luat doanh he snippets", "luat kinh he snippets", "luc canh he snippets", "luat hanh he snippets", "luat canh cha snippets", "luat canh dep 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: (((("luat canh 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: (((("luat canh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat canh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat canh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.