Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuan vu mo snippets" » "xuan du mo snippets", "xuan tu mo snippets", "xuan duc mo snippets", "xuan vi mo snippets", "xuan va mo snippets", "xuan vu o 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: (((("xuan vu mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan vu mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan vu mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan vu mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.