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