Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
thanh tung » thanh cong
chong cong » cong cong, thong cong, cuong cong
hieu xanh » chieu xanh, hieu manh, dieu hanh
tam chong » tac chong, tam thuong, tam hon
cong vang » cong lang, cong quang, cong ngang
vang phan » van phan, nang phan, quang phan
tung tam » trung tam, vung tam, dung tam
phan cac » nhan cach, phan dau, phan lap

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) OR (hieu nganh)) - thanh tung tam chong cong vang phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (hieu nganh)) - thanh tung tam chong cong vang phan cac".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (hieu nganh)) - thanh tung tam chong cong vang phan cac*.