Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"chay cao trac snippets" » "cay cao trac snippets", "chat cao trac snippets", "nha cao trac snippets", "chay cao thach snippets", "chay cao tai snippets", "chay tap trac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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 core snippets") or ("chay cao trac snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("chay cao trac snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( chay cao trac snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("chay cao trac snippets"))) or ("locating bug code snippets"))*.