Perhaps you should try some spelling variations:
duong thanh » dong thanh, muong thanh, luong thanh
nhung duong » nhung dung, nhung huong, nhung tuong
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
trung tuan » trung thanh, trung tam, tran tuan
thanh toan » thanh hoa, thanh san, tinh toan
trung cua » truong cua, trung cap, dung cua
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: ho ((chieu sang) or (chieu sach)) - hanh ((trung cua) OR (trung tuan)) nhung duong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - hanh ((trung cua) OR (trung tuan)) nhung duong thanh toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - hanh ((trung cua) OR (trung tuan)) nhung duong thanh toan cau*".