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"
"hang java java snippets" » "hang va java snippets"
"locating bug code snippets" » "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: (((("luong cac chan snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong cac chan snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong cac chan snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong cac chan snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.