Perhaps you should try some spelling variations:
"luong va code snippets" » "dung va code snippets", "luong va code slippers"
"trong cac code snippets" » "trong cac cong snippets", "trong cac co snippets", "trong cac che snippets", "trong cac 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: (((("luong va code snippets") or ("trong cac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong va code snippets") OR ("trong cac code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong va code snippets ) or ( trong cac code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong va code snippets") or ("trong cac code snippets"))) or ("locating bug code snippets"))*.