Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
trung cua » truong cua, trung cap, dung cua
hang cong » dang cong, hang nong, bang cong
vien cac » vien bach, vien dai, vien da
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((vien cac) or (lieu va)) - thanh ((trung cua) or (trung tuan)) hang cong ban toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((vien cac) OR (lieu va)) - thanh ((trung cua) OR (trung tuan)) hang cong ban toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((vien cac) or (lieu va)) - thanh ((trung cua) or (trung tuan)) hang cong ban toan cau*.