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