Perhaps you should try some spelling variations:
"dung phu cham snippets" » "dung phu code snippets", "dung phan cham snippets", "dung cho cham snippets", "dung he cham snippets", "dung phuc cham snippets", "dung phuc chau 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 phu 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 phu cham snippets") OR ("hang java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung phu cham snippets ) or ( hang java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phu cham snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))*.