Perhaps you should try some spelling variations:
"locating bung code snippets" » "locating bug code snippets"
"using java core snippets" » "using data core snippets"
"dong tin duan snippets" » "thong tin duan snippets", "luong tin duan snippets", "dong kinh duan snippets", "dong tien duan snippets", "dong tin quan snippets", "dong tin quang 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 core snippets") or ("dong tin duan snippets"))) or ("locating bung code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("dong tin duan snippets"))) OR ("locating bung code snippets")).
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( dong tin duan snippets ))) or ( locating bung code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("dong tin duan snippets"))) or ("locating bung code snippets"))*.