Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
hieu lang » chieu sang, hieu quang, nhieu tang
manh tung » manh hung, thanh tung
dang cong » dung cong
cong vang » cong lang, cong quang, cong ngang
vang tuan » van tuan, vong tuan, quang tuan
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
tuan ban » tuan bang, toan ban, luan 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 tung cua dang cong vang tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (hieu lang)) - manh tung cua dang cong vang tuan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (hieu lang)) - manh tung cua dang cong vang tuan ban*.