Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat voi cong snippets" » "hat noi cong snippets", "hat moi cong snippets", "hat tai cong snippets", "hat vi cong snippets", "hat doi cong snippets", "sat voi cong 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 voi cong 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 voi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat voi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat voi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.