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