Perhaps you should try some spelling variations:
"hong danh het snippets" » "thong danh het snippets", "hong hanh het snippets", "hong anh het snippets", "hong danh viet snippets", "hong danh hieu snippets", "hong danh bat snippets", "hong danh het 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: (((("hong danh het snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hong danh het snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hong danh het snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hong danh het snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.