Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoe sinh do snippets" » "cho sinh do snippets", "hoa sinh do snippets", "hoc sinh do snippets", "khoe sinh dao snippets", "khoe kinh do snippets", "khoe sinh de 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: (((("khoe sinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoe sinh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoe sinh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoe sinh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.