Perhaps you should try some spelling variations:
"tran nhanh thi snippets" » "tran thanh thi snippets", "tran hanh thi snippets", "tran nhan thi snippets", "tran nhanh thai snippets", "tran nhanh thuc snippets", "tran nhan tai snippets"
"dung java java slippers" » "dung va java slippers", "dung java java slippery", "dung java java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung java java slippers\") OR (\"tran nhanh thi snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung java java slippers ) OR ( tran nhanh thi snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung java java slippers") OR ("tran nhanh thi snippets"))) OR ("locating bug code snippets"))*.