Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"khang minh tri snippets" » "khang sinh tri snippets", "khong minh tri snippets", "khang ninh tri snippets", "khang dinh tri snippets", "khang chinh tri 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 ("khang minh tri snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("khang minh tri snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( khang minh tri snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("khang minh tri snippets"))) or ("locating bug code snippets"))*.