Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tuong cua » truong cua, huong cua, thong cua
dang cong » dung cong
tung cua » trung cua, dung cua, tang cua
cong ban » cong bang, cong san, cong tan
ban quan » van quan
quan cau » quang cao, toan cau, quan ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chieu sach)) - manh ((tung cua) OR (tuong cua)) dang cong ban quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chieu sach)) - manh ((tung cua) OR (tuong cua)) dang cong ban quan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (chieu sach)) - manh ((tung cua) OR (tuong cua)) dang cong ban quan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chieu sach)) - manh ((tung cua) OR (tuong cua)) dang cong ban quan cau*.