Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
cong thanh » dong thanh, cong trinh, cong tan
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung van » truong van, trong van, trung va
dung cong » dung trong
van dung » van dong, xay dung, tin dung
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 tinh)) - thanh trung van dung cong thanh ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu tinh)) - thanh trung van dung cong thanh ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (chieu tinh)) - thanh trung van dung cong thanh ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (chieu tinh)) - thanh trung van dung cong thanh ((toan cau) OR (toan ban))*.