Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xuan du mo snippets" » "xuan duc mo snippets", "xuan huy mo snippets", "xuan thu mo snippets", "xuan dau mo snippets", "xuan de mo 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 du 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 du mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan du mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan du mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.