Perhaps you should try some spelling variations:
dang truong » tang truong, dang trung, nang truong
chieu xanh » chieu sach, chieu sang, chieu tinh
truong cao » truong dai
truong anh » trong anh, trung anh, truong thanh
hieu xanh » hieu manh, hieu nganh, dieu hanh
trung cap » trung tam
tuan cau » toan cau, quan cau, tuan cu

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 (chieu xanh)) - hanh ((trung cap) or (truong cao)) dang truong anh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - hanh ((trung cap) OR (truong cao)) dang truong anh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - hanh ((trung cap) or (truong cao)) dang truong anh tuan cau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (chieu xanh)) - hanh ((trung cap) or (truong cao)) dang truong anh tuan cau*.