Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thiet ve du snippets" » "thiet ke du snippets", "thiet de du snippets", "thieu ve du snippets", "thiet ve su snippets", "thiet te du snippets", "thiet va du 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: (((("thiet ve du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thiet ve du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thiet ve du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thiet ve du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.