Perhaps you should try some spelling variations:
"phung van chinh snippets" » "phung va chinh snippets", "phung van thinh snippets", "phung hanh chinh snippets", "phuong van chinh snippets", "nhung van chinh snippets", "chung van chinh snippets", "phung van chinh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("phung van chinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phung van chinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phung van chinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phung van chinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.