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