Perhaps you should try some spelling variations:
"luong cac chan snippets" » "luong cuoc chan snippets", "luong va chan snippets", "luong tai chan snippets", "luong cam chan snippets", "luong cac nhan snippets", "luong cac chat snippets"
"using a code snippets" » "using a 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: (((("using a code snippets") or ("luong cac chan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a code snippets") OR ("luong cac chan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using a code snippets ) or ( luong cac chan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") or ("luong cac chan snippets"))) or ("locating bug code snippets"))*.