Perhaps you should try some spelling variations:
"trinh sinh van slippers" » "trinh kinh van slippers", "tinh sinh van slippers", "trinh dinh van slippers", "trinh sinh vat slippers", "trinh sinh va slippers", "trinh sinh van slippery", "trinh sinh van grippers"
"dung java java snippets" » "dung 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: (((("trinh sinh van slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh sinh van slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh sinh van slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh sinh van slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.