Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
hanh trung » thanh trung, hanh trang, manh trung
hieu lang » chieu sang, hieu quang, nhieu tang
tuan hang » tuan hoang, tuan bang, tuan dang
hang cong » dang cong, hang nong, bang cong
cong van » cong vang, cong san, song van
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chinh sach) or (hieu lang)) - hanh trung tuan hang cong van ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chinh sach) OR (hieu lang)) - hanh trung tuan hang cong van ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: ho ((chinh sach) or (hieu lang)) - hanh trung tuan hang cong van ((toan cau) or (toan tap))*.