Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung hat » trung nhat, trung phat, trung ha
hat trong » chat trong, nhat trong, vat trong
ban thanh » ban hanh, ban hang
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu manh) or (chieu sach)) - thanh trung hat trong cong ban thanh san~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu manh) OR (chieu sach)) - thanh trung hat trong cong ban thanh san.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu manh) or (chieu sach)) - thanh trung hat trong cong ban thanh san*.