Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat bo cong snippets" » "hat so cong snippets", "hat cao cong snippets", "hat hoc cong snippets", "chat bo cong snippets", "hat ba cong snippets", "hat do 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 bo 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 bo cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat bo cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat bo cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.