Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luat dau du snippets" » "luat dat du snippets", "luat dan du snippets", "bat dau du snippets", "luat dau tu snippets", "luat day du snippets", "luat dao du 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 dau du 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 dau du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luat dau du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luat dau du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.