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