Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"chap anh trac snippets" » "chap hanh trac snippets", "chap kinh trac snippets", "ha anh trac snippets", "chap sinh trac snippets", "chap anh tuan snippets", "chap anh thuc 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 ("chap anh trac snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("chap anh trac snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( chap anh trac snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("chap anh trac snippets"))) or ("locating bug core snippets"))*.