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