Perhaps you should try some spelling variations:
"dong cua trinh slippers" » "dong qua trinh slippers", "dong cua tinh slippers", "dong xuan trinh slippers", "dung cua trinh slippers", "cong cua trinh slippers", "huong cua trinh slippers", "dong cua trinh slippery", "dong cua trinh grippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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: (((("dong cua trinh slippers") or ("dung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cua trinh slippers") OR ("dung dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cua trinh slippers ) or ( dung dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cua trinh slippers") or ("dung dung code snippets"))) or ("locating bug code snippets"))*.