Perhaps you should try some spelling variations:
"trong thanh le snippets" » "truong thanh le snippets", "trung thanh le snippets", "rong thanh le snippets", "trong thinh le snippets", "trong thanh ve snippets", "trong thanh liem snippets"
"dung java java snippets" » "dung va java 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: (((("trong thanh le snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong thanh le snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong thanh le snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong thanh le snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.