Perhaps you should try some spelling variations:
"phang lam chat snippets" » "phang lam code snippets", "phan lam chat snippets", "phong lam chat snippets", "phuong lam chat snippets", "phang dam chat snippets", "phang luan chat snippets", "phang cao chat 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: (((("dung java java snippets") or ("phang lam chat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("phang lam chat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( phang lam chat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("phang lam chat snippets"))) or ("locating bug core snippets"))*.