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