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