Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khoang thi cau snippets" » "khoang thi code snippets", "khoang thoi cau snippets", "hoang thi cau snippets", "hoang thai cau snippets", "khoang thi chau snippets", "khoang thi cu snippets", "khoang thi cam snippets"
"dung java java snippets" » "dung va java 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: (((("dung java java snippets") or ("khoang thi cau snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("khoang thi cau snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( khoang thi cau snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("khoang thi cau snippets"))) or ("locating bug core snippets"))*.