Perhaps you should try some spelling variations:
"xuan tan java snippets" » "xuan toan java snippets", "xuan can java snippets", "xuan thanh java snippets", "xuan tan va snippets", "xuan tan java slippers"
"dung lua code snippets" » "dung luan code snippets", "dung luat code snippets", "dung cua code snippets", "dung lbm code snippets", "dung lua code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 tan java snippets") or ("dung lua code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xuan tan java snippets") OR ("dung lua code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xuan tan java snippets ) or ( dung lua code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xuan tan java snippets") or ("dung lua code snippets"))) or ("locating bug code snippets"))*.