Perhaps you should try some spelling variations:
vang truong » tang truong, van truong, nang truong
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trung cua » truong cua, trung tuan, trung cap
dong cong » duong cong, dung cong, dang cong
cong vang » cong lang, cong quang, cong ngang
cua dong » chua dong, cua cong, cua dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh trung cua dong cong vang truong dai~.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cua dong cong vang truong dai*.