Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
duong cong » dung cong, luong cong, duong trong
toc chieu » toc thieu, doc hieu, hoc thieu
trung cap » truong cao, trung tam
tong cong » trong cong, cong cong, dung cong
dang dan » dang dang, dang van, dung dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu tinh - thanh trung cap ((duong cong) or (tong cong)) dang dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu tinh - thanh trung cap ((duong cong) OR (tong cong)) dang dan ca*.