Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac thi cua snippets" » "khau thi cua snippets", "khuc thi cua snippets", "khuat thi cua snippets", "khac thai cua snippets", "khac thi cuc snippets", "khac tri cua 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: (((("khac thi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khac thi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac thi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac thi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.