Perhaps you should try some spelling variations:
"dung chin cham snippets" » "dung chin code snippets", "dung chien cham snippets", "dung chinh cham snippets", "dung chi cham snippets", "dung chinh chau snippets", "dung chinh nham snippets", "dung thi cham snippets"
"locating bug core snippets" » "locating bug code snippets"
"hang java java snippets" » "hang 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 chin cham snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung chin cham snippets") OR ("hang java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung chin cham snippets ) or ( hang java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung chin cham snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))*.