Perhaps you should try some spelling variations:
"hai truong quan snippets" » "hai trong quan snippets", "hai thong quan snippets", "hai luong quan snippets", "tai truong quan snippets", "dai truong quan snippets", "hai thuong quan snippets", "hai truong quan 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: (((("hai truong quan snippets") or ("using low java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai truong quan snippets") OR ("using low java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai truong quan snippets ) or ( using low java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai truong quan snippets") or ("using low java snippets"))) or ("locating bug code snippets"))*.