Perhaps you should try some spelling variations:
"van dung cong snippets" » "van dung code snippets", "van dung trong snippets", "van dong cong snippets", "xay dung cong snippets", "tin dung cong snippets"
"locating bugs code slippers" » "locating bug code slippers", "locating bugs code snippets"
"using java java snippets" » "using data java snippets"

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

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