Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc khac he snippets" » "hoc kham he snippets", "soc khach he snippets", "khoa khac he snippets", "hoc khac ve snippets", "hoc khac hau snippets", "hoc khac thi 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: (((("hoc khac he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc khac he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc khac he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc khac he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.