Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dong doi khach snippets" » "dong moi khach snippets", "dong voi khach snippets", "dong doi khang snippets", "duong doi khach snippets", "dung doi khach snippets", "dong hoi khach snippets"
"locating bug core snippets" » "locating bug code snippets"

Try widening your search to All Fields.

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 ("dong doi khach snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("dong doi khach snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dong doi khach snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dong doi khach snippets"))) or ("locating bug core snippets"))*.