Perhaps you should try some spelling variations:
"hao dung van snippets" » "khao dung van snippets", "hai dung van snippets", "hao hung van snippets", "hao duong van snippets", "hao dung va snippets", "hao dang van snippets", "hao dung 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: (((("hao dung 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: (((("hao dung van snippets") OR ("using low java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao dung van snippets ) or ( using low java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao dung van snippets") or ("using low java snippets"))) or ("locating bug code snippets"))*.