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