Perhaps you should try some spelling variations:
"dai hong van snippets" » "dai huong van snippets", "dai cong van snippets", "dai cuong van snippets", "dai hoang van snippets", "dai thong van snippets", "dai song van snippets", "dai hong van slippers"
"using low java snippets" » "using low java slippers"
"locating bug code snippets" » "locating bug code slippers", "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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dai hong van snippets") or ("using low java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dai hong van snippets") OR ("using low java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dai hong van snippets ) or ( using low java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dai hong van snippets") or ("using low java snippets"))) or ("locating bug code snippets"))*.