Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
cong gian » chong gian, con gian, cong giao
doc hieu » toc thieu, hoc thieu, hoc hien
gian dan » gian lang
dan dong » van dong, dan dung, dao dong
dong tan » duong tan, dong tai, dong san
tran cau » tran chau, toan cau, ran cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - thanh cong gian dan dong tan tran cau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh cong gian dan dong tan tran cau*.