Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, manh trung
trung tuan » trung thanh, trung tam, tran tuan
dang thanh » dong thanh, dang hanh, hoang thanh
tuan cong » thuan cong, luan cong, tran cong
cong dang » cong dong, cong dan, cong dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((dieu hanh) or (chieu sang)) - hanh trung tuan cong dang thanh ((toan ban) OR (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((dieu hanh) OR (chieu sang)) - hanh trung tuan cong dang thanh ((toan ban) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((dieu hanh) or (chieu sang)) - hanh trung tuan cong dang thanh ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: ho ((dieu hanh) or (chieu sang)) - hanh trung tuan cong dang thanh ((toan ban) OR (van ban))*.