Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat luat cau snippets" » "phap luat cau snippets", "hanh luat cau snippets", "thai luat cau snippets", "hat luat dau snippets", "hat lua cau snippets", "hat luat cac 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: (((("hat luat cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat luat cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat luat cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat luat cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.