Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
trung tuan » trung thanh, trung tam, tran tuan
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
tuan ban » tuan bang, luan ban, quang ban
ban cong » bang cong, van cong, phan cong
cong san » cong tac
toan cao » toan tap
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: theo ((hieu manh) or (hieu lang)) - manh trung tuan ban cong san ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (hieu lang)) - manh trung tuan ban cong san ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (hieu lang)) - manh trung tuan ban cong san ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu lang)) - manh trung tuan ban cong san ((toan cao) OR (toan ban))*.