Perhaps you should try some spelling variations:
"song danh cau snippets" » "song hanh cau snippets", "cong danh cau snippets", "song xanh cau snippets", "song danh dau snippets", "song danh ca snippets", "song danh hau snippets"
"hang java java snippets" » "hang va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("song danh cau snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("song danh cau snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( song danh cau snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("song danh cau snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.