Perhaps you should try some spelling variations:
"truan doi hang snippets" » "truyen doi hang snippets", "quan doi hang snippets", "khuan doi hang snippets", "truan doi khang snippets", "truan voi hang snippets", "truan doi hanh snippets", "truan doi hang slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("truan doi hang snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("truan doi hang snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truan doi hang snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truan doi hang snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.