Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"trong toan cao snippets" » "truong toan cao snippets", "trong tan cao snippets", "trong hoan cao snippets", "trong toan ban snippets", "trong toan tap snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") OR ("trong toan cao snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using java code snippets\") OR (\"trong toan cao snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( using java code snippets ) OR ( trong toan cao snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") OR ("trong toan cao snippets"))) OR ("locating bug core snippets"))*.