Perhaps you should try some spelling variations:
"le trong dan snippets" » "le trong dang snippets", "le trong san snippets", "le trong tan snippets", "le trung dan snippets", "ly trong dan snippets", "le tang dan snippets", "le trong dan 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: (((("le trong dan snippets") or ("using low java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("le trong dan snippets") OR ("using low java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( le trong dan snippets ) or ( using low java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("le trong dan snippets") or ("using low java snippets"))) or ("locating bug code snippets"))*.