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