Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc ve du snippets" » "duoc va du snippets", "nuoc ve du snippets", "duoc vo du snippets", "duoc ve su snippets", "duoc te 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: (((("duoc 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: (((("duoc ve du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc ve du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc ve du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.