Perhaps you should try some spelling variations:
"trinh qua va slippers" » "trinh quan va slippers", "trinh cua va slippers", "trinh quang va slippers", "trinh qua van slippers", "trinh vua va slippers", "trinh qua va slippery", "trinh qua va 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 qua va 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 qua va slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh qua va slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh qua va slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.