Perhaps you should try some spelling variations:
trinh trung » trinh truong, trinh trong, sinh trung
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
trung nam » trung tam, trong nam, trung cap
ngan cong » nganh cong, nganh nong, ngan hang
nam ngan » nam nganh, nam ngang, nam ngay
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (chieu sach)) - trinh trung nam ngan cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - trinh trung nam ngan cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chieu sach)) - trinh trung nam ngan cong dan toan cao*.