Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat phap hoc snippets" » "han phap hoc snippets", "hat phat hoc snippets", "luat phap hoc snippets", "hat phap hoan snippets", "hat phap mo snippets", "hat phap han 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 phap hoc 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 phap hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat phap hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat phap hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.